Circles PSAT

what is the formula for finding diameter

• r = 2 d

• d = 2 r

• a = m c²

• c = π 2 r

what is the formula for finding circumference

• c = π d

• c = 2 π r

• d = 2 r

• r = d/2

Find the radius of the circle

• 20 ft

• 10 ft

• 5.5 ft

• 10

what is the formula for finding area of a circle

• C = π r²

• A = π r²

• A = π r² / 2

• C = 2 π r

The definition of circumference is

• distance from the center of any point on the circle

• distance from one point to another

• distance around the circle

• distance from the center of any point on the circle

what is the formula for finding radius

• c = π d

• c = 2 π r

• d = r/2

• r = d/2

which segment above represents the diameter

• BC

• AC

• BD

• LM

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