Circle Circles Circles

what is the formula for finding circumference

select ALL that apply

• c = π d

• c = 2 π r

• d = 2 r

• r = d/2

which segment above represents the diameter

• BC

• AC

• BD

• LM

Find the radius of the circle

• 20 ft

• 10 ft

• 5.5 ft

• 10

find the diameter of the circle

• 1 ft

• 4 ft

• 4 mm

• 2 ft

what is the formula for finding area of a circle

• C = π r²

• A = π r²

• A = π r² / 2

• C = 2 π r

which segment above represents the radius

• AC

• AB

• LM

find the diameter of the circle

• 14 m

• 7 m

• 14

• 3.5 m

find the radius of the circle

• 3 m

• 1.5 m

• 1.5

• 1.5 mm

what is the formula for finding the area of a semi-circle

• A = π r²

• C = π r²

• A = π r² / 2

• A = 2 π r

what is the radius of the inner circle?

• 12 in

• 8 in

• 8 ft

• 4 in