Which circles have an area of 36pie ft2?

Choose all answers that are correct.

A.
a circle with a radius of 6 ft

B.
a circle with a diameter of 6 ft

C.
a circle with a radius of 12 ft

D.
a circle with a diameter of 12 ft

Question

Which circles have an area of  36pie ft2?
 
Choose all answers that are correct.
 
 A.
a circle with a radius of 6 ft
 
 B.
a circle with a diameter of 6 ft
 
 C.
a circle with a radius of 12 ft
 
 D.
a circle with a diameter of 12 ft

anonymous · Answer

@iGreen.

anonymous · Answer

Plug it in the formula:

$C = 2 \pi r $

$36 \pi = 2 \pi r$

Divide pi to both sides:

$36 = 2r$

Divide 2 to both sides, what's 36 / 2? @lordoftanks

anonymous · Answer

the %100 correct answer would actualy be 3.385 for the radius...

anonymous · Answer

Can you divide 36 / 2? @lordoftanks

triciaal · Answer

area of 36pie ft2
formula for the area 
A = pi* r^2
@iGreen. gave the circumference C = 2*pi*r

triciaal · Answer

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