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26-08-2016
Biology

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Which circles have an area of 16pi in2?

Choose all answers that are correct.

A. a circle with a radius of 2 in.
B. a circle with a radius of 4 in.
C. a circle with a diameter of 8 in.
D.a circle with a diameter of 16 in.

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Hussain514 Hussain514

26-08-2016

A = (pi) x r^2
Area = (pi) x (16)

r^2 = 16
t = 4

The diameter =d=2r= 2*4 = 8

d=8 inches.

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