These are the questions most test-takers get right. They are worth practising anyway: on the digital SAT the easy questions in Module 1 are what route you into the harder, higher-scoring Module 2, so dropping one costs more than it looks.
Every question below is a real item from the SAT Climb bank, tagged easy by the same difficulty model the app uses to build your practice. Pick an answer before you open the explanation.
Math · Geometry and Trigonometry~2 per testEasy tier
A right rectangular prism has a length of 8 centimeters, a width of 3 centimeters, and a height of 5 centimeters. What is the volume, in cubic centimeters, of the prism?
Show the answer and explanation
Why B is right
The volume of a right rectangular prism is found by multiplying its length, width, and height. With dimensions of 8 centimeters, 3 centimeters, and 5 centimeters, the volume is 8 × 3 × 5 = 120 cubic centimeters.
Why the others are wrong
AThis results from multiplying the three dimensions and then dividing by 2, which is incorrect. The factor of 1/2 does not apply to the volume formula for a rectangular prism.
CThis is the surface area of the prism, calculated as 2(8×3 + 8×5 + 3×5) = 158 square centimeters. Surface area sums the areas of all faces, while volume is the product of the three dimensions.
DThis results from doubling the correct volume or from an incorrect application of the dimensions. The volume formula requires simply multiplying length × width × height once.
Question 2Easy
A rectangle has a perimeter of 50 centimeters and a width of 10 centimeters. What is the length, in centimeters, of the rectangle?
Show the answer and explanation
Why B is right
The perimeter of a rectangle is 2(length + width). The rectangle has a perimeter of 50 centimeters and a width of 10 centimeters, so 50 = 2(length + 10). Solving gives length + 10 = 25, so length = 15 centimeters.
Why the others are wrong
AThis is the result of dividing the width by 2 (10 ÷ 2 = 5), which does not relate to the perimeter calculation.
CThis is the result of dividing the perimeter by 2 and then subtracting the width without accounting for both pairs of sides (50 ÷ 2 - 10 = 15 is correct, but this represents 50 - 2 × 10 - 10 = 20, a computational error).
DThis is the result of subtracting the width from the perimeter (50 - 10 = 40) without dividing by 2.
Question 3Easy
A circle has a diameter of 14 inches. What is the area, in square inches, of the circle?
Show the answer and explanation
Why B is right
The area of a circle is πr2, where r is the radius. Since the diameter is 14 inches, the radius is 7 inches. Substituting 7 for r gives π(7)2, which equals 49π square inches.
Why the others are wrong
AThis is the circumference of the circle using the diameter, πd, rather than the area.
CThis results from incorrectly using the diameter instead of the radius in the area formula, π(14)².
DThis results from incorrectly computing half of the area, 49π divided by 2.
Question 4Easy
A rectangular garden has a length of 25 meters and a width of 8 meters. What is the perimeter, in meters, of the garden?
Show the answer and explanation
Why B is right
The perimeter of a rectangle is P=2(l+w), where l is the length and w is the width. Substituting 25 for l and 8 for w gives P=2(25 + 8) = 2(33) = 66 meters.
Why the others are wrong
AThis is the result of adding the length and width without multiplying by 2.
CThis is the result of doubling only the length or using incorrect calculation.
DThis is the area (25 × 8 = 200) rather than the perimeter.
Question 5Easy
A right rectangular prism has a length of 7 meters, a width of 4 meters, and a height of 2 meters. What is the volume, in cubic meters, of the prism?
Show the answer and explanation
Why C is right
The volume of a right rectangular prism is the product of its length, width, and height. The prism has a length of 7 meters, a width of 4 meters, and a height of 2 meters, so the volume is 7 × 4 × 2 = 56 cubic meters.
Why the others are wrong
AThis is the result of adding the dimensions (7 + 4 + 2 = 13), which does not calculate the volume.
BThis is the result of multiplying only two dimensions (7 × 4 = 28), omitting the height.
DThis is the result of calculating the surface area (2 × 7 × 4 + 2 × 7 × 2 + 2 × 4 × 2 = 56 + 28 + 16 = 100), or doubling the correct volume.
Question 6Easy
A cylinder has a radius of 5 centimeters and a height of 12 centimeters. What is the volume, in cubic centimeters, of the cylinder?
Show the answer and explanation
Why C is right
The volume of a cylinder is πr2h, where r is the radius and h is the height. Since the radius is 5 centimeters and the height is 12 centimeters, the volume is π(52)(12)=300π cubic centimeters.
Why the others are wrong
AThis results from multiplying the circumference by the height (2πr × h = 2π(5)(12) = 120π) and dividing by 2, which is incorrect.
BThis is half the correct volume (300π ÷ 2 = 150π).
DThis is the correct numerical value without π (25 × 12 = 300).
Question 7Easy
A cylinder has a radius of 5 meters and a height of 12 meters. What is the volume, in cubic meters, of the cylinder?
Show the answer and explanation
Why B is right
The volume of a cylinder is πr2h, where r is the radius and h is the height. With a radius of 5 meters and a height of 12 meters, the volume is π(5)2(12)=π(25)(12)=300π cubic meters.
Why the others are wrong
AThis results from computing πrh instead of πr²h.
CThis results from incorrectly halving the correct volume.
DThis is the lateral surface area (2πrh = 120π), not the volume.
Question 8Easy
A right rectangular prism has a length of 10 inches, a width of 6 inches, and a height of 3 inches. What is the surface area, in square inches, of the prism?
Show the answer and explanation
Why C is right
The surface area of a right rectangular prism is SA = 2lw+2lh+2wh. Substituting the given values: SA = 2(10)(6) + 2(10)(3) + 2(6)(3) = 120 + 60 + 36 = 216 square inches.
Why the others are wrong
AThis is the volume of the prism (10 × 6 × 3), not the surface area.
BThis results from calculating only half of the surface area by omitting the factor of 2.
DThis is the sum of the three dimensions, not the surface area.
Question 9Easy
A right rectangular prism has a length of 5 inches, a width of 3 inches, and a height of 8 inches. What is the volume, in cubic inches, of the prism?
Show the answer and explanation
Why D is right
The volume of a right rectangular prism is the product of its length, width, and height. Since the dimensions are 5 inches, 3 inches, and 8 inches, the volume is 5 × 3 × 8 = 120 cubic inches.
Why the others are wrong
AThis is the sum of the three dimensions (5 + 3 + 8 = 16), not the volume.
BThis is half the correct volume (120 ÷ 2 = 60).
CThis results from multiplying only two of the three dimensions (5 × 8 = 40).
Question 10Easy
A right rectangular prism has a length of 10 feet, a width of 6 feet, and a height of 7 feet. What is the volume, in cubic feet, of the prism?
Show the answer and explanation
Why C is right
The volume of a right rectangular prism is the product of its length, width, and height. Since the dimensions are 10 feet, 6 feet, and 7 feet, the volume is 10 × 6 × 7 = 420 cubic feet.
Why the others are wrong
AThis is the sum of the three dimensions (10 + 6 + 7 = 23), not the volume.
BThis is half the correct volume (420 ÷ 2 = 210).
DThis results from multiplying only two of the three dimensions (10 × 6 = 60).
Question 11Easy
A circle has a radius of 7 meters. What is the area, in square meters, of the circle?
Show the answer and explanation
Why C is right
The area of a circle is given by the formula A=πr2, where r is the radius. With a radius of 7 meters, the area is π(7)2=49π square meters.
Why the others are wrong
AThis is the circumference of the circle, calculated as 2πr = 2π(7) = 14π meters. Circumference measures the distance around the circle, not the area enclosed by it.
BThis results from incorrectly using the formula πr instead of πr², or from multiplying 7 by 3.5 and then by π. The correct formula requires squaring the radius.
DThis results from squaring the radius twice (7² squared again) or from using the diameter instead of the radius in the formula. The area formula uses the radius squared, not the diameter squared.
Question 12Easy
A right triangle has a base of 10 inches and a height of 8 inches. What is the area, in square inches, of the triangle?
Show the answer and explanation
Why B is right
The area of a triangle is one-half the product of its base and height. The triangle has a base of 10 inches and a height of 8 inches, so the area is (1/2) × 10 × 8 = 40 square inches.
Why the others are wrong
AThis is the result of adding the base and height (10 + 8 = 18), which does not calculate the area.
CThis is the result of multiplying the base and height without the factor of 1/2 (10 × 8 = 80).
DThis is the result of calculating (1/2) × 10 × 8 but with a computational error, or calculating (10 + 8) ÷ 2 + 11.
Question 13Easy
A circle has a radius of 7 centimeters. What is the area, in square centimeters, of the circle?
Show the answer and explanation
Why D is right
The area of a circle is πr2, where r is the radius. The circle has a radius of 7 centimeters, so the area is π×72=49π square centimeters.
Why the others are wrong
AThis is the result of calculating the circumference (2πr = 2π × 7 = 14π) instead of the area.
BThis is the result of calculating πr² and then dividing by 2, treating the circle area incorrectly.
CThis is the result of calculating r² = 49 but omitting the factor of π in the area formula.
Question 14Easy
A circle has a diameter of 16 meters. What is the area, in square meters, of the circle?
Show the answer and explanation
Why C is right
The area of a circle is A=πr2, where r is the radius. Since the diameter is 16 meters, the radius is 8 meters. Substituting 8 for r gives A=π(8)2=64π square meters.
Why the others are wrong
AThis results from using radius without squaring it (π × 8 = 8π).
BThis results from using the diameter instead of the radius in the formula without squaring.
DThis results from squaring the diameter instead of the radius (π(16)² = 256π).
Question 15Easy
A circle has a diameter of 16 meters. What is the area, in square meters, of this circle?
Show the answer and explanation
Why D is right
The area of a circle is πr2 where r is the radius. Since the diameter is 16 meters, the radius is 8 meters. Substituting 8 for r gives π(82)=64π square meters.
Why the others are wrong
AThis incorrectly uses half the diameter instead of squaring the radius.
BThis is πd, which represents the circumference of the circle, not the area.
CThis is the square of the radius but omits the factor of π.
What to do after easy
Getting these right quickly is the point: speed on the easy questions is what buys time for the hard ones. When they stop costing you effort, move up.
Questions are written by SAT Climb and drawn from its own item bank. SAT® is a registered trademark of College Board, which is not affiliated with and does not endorse SAT Climb.