Circle Formula

Which is the correct formula for the area of a circle?

• A = π r²

• A = 2π r²

• A=πd

• A=π d²

Which formulas can be used to find the circumference of a circle?

• C = π r²

• C = 2π r

• C = π d

• C = 2πd

Which formula can be used to find the measure of an angle in the circle shown?

• angle = 1/2(arc)

• angle = 1/2(arc + arc)

• angle = 1/2(big - small)

• angle = arc

Which formula can be used to find the the measure of the angle shown?

• angle = 1/2(arc)

• angle = 1/2(arc + arc)

• angle = 1/2(big - small)

• angle = arc

What is the formula for the area of a circle?

• = π r ²

• = 1/2 (π r ²⁾

• = 2πr

• = πd

What is the formula for the area of a circle?

• = π r ²

• = 1/2 (π r ²⁾

• = 2πr

• = πd

Formula for the area of a circle

• 25.12 inches

• 12.56 inches

• 50.24 inches

• 31.4 inches

What is the formula for area of a circle?

•  π×r²

• = 2×π×r

What is the formula for area of a circle?

• πr²

• 2πr

• πd

• π7