Circles and Arcs

what is the formula for finding area of a circle

• C = π r²

• A = π r²

• A = π r² / 2

• C = 2 π r

If the circumference of a circle is 44 π feet, what is the radius?

• 22 ft

• 44 ft

• 33 feet

• 3.14 feet

Which segment is a radius?

• LM

• DC

• BD

• ML

Find the area of this quarter circle with a radius of 18 cm.

• 1017.36 cm

• 254.34 cm

• 26.52 cm

• 123.65 cm

If the area of a circle is 25 π in² , then the diameter is?

• 10 in

• 5 in

• 25 in

• pi in

what is the formula for finding radius

• c = π d

• c = 2 π r

• d = r/2

• r = d/2

Find the area of the quarter circle. Round you answer to the nearest hundredth.

• 58.88

• 78.50

• 7.85

• 157.00

what is the definition of pi

select ALL that apply

• it is the sixteenth letter in the greek alphabet

• it has a represented value of 3.14

• it has a represented value of 22/7.

• Its something you eat...

What is the area of this circle?

• 163.2

• 15.3

• 124.2

• 113.1

If the circumference of a circle is 22 π ft, what is the radius?

• 22 ft

• 11ft

• π ft

• no ft