Area and Circumference of Circles Review

Question 1: What is the formula to calculate the area of a circle?

• A = πr²

• A = 2πr

• A = 3r²

• A = 4πr

Tags

CCSS.HSG.GMD.A.1

Question 2: If the radius of a circle is 5 cm, what is its area?

• 10.24 cm²

• 15.7 cm²

• 25.12 cm²

• 78.54 cm²

Tags

CCSS.HSG.GMD.A.1

Question 3: What is the area of a circle with a diameter of 12 meters?

• 72 square meters

• 56.52 square meters

• 24 square meters

• 113.04 square meters

Tags

CCSS.HSG.GMD.A.1

Question 4: Calculate the area of a circle with a diameter of 8 inches.

• 64 square inches

• 100.48 square inches

• 50.24 square inches

• 16 square inches

Tags

CCSS.HSG.GMD.A.1

Question 5: If the area of a circle is 81 square units, what is its radius?

• 7 units

• 9 units

• 20 units

• 5 units

Question 6: What is the formula to calculate the circumference of a circle?

• 2r

• π r²

• πd

• 2d

Tags

CCSS.HSG.GMD.A.1

Question 7: If the diameter of a circle is 5 cm, what is its circumference?

• 15.7 cm

• 20 cm

• 31.42 cm

• 8.5 cm

Tags

CCSS.HSG.GMD.A.1

Question 8: Calculate the circumference of a circle with a radius of 6 meters.

• 12π

• 6π

• 3π

• 36π

Tags

CCSS.HSG.GMD.A.1

Question 9: What is the circumference of a circle with a diameter of 14 inches?

• 28π inches

• 49π inches

• 14π inches

• 7π inches

Tags

CCSS.HSG.GMD.A.1

Question 10: What is the area of a circle with a diameter of 6?

• 113.04

• 28.26

• 18.84

• 3.14

Tags

CCSS.HSG.GMD.A.1