Find the diameter of a circle with a circumfrence of 50 mm. Round your answer to the nearest tenth.

A. 16.0mm
B. 26.4mm
C. 8.4mm
D. 33.5mm
Is the answer C?
Thank you

2 answers

C = 2πr

50 = 2πr

r ≈ 8.0 mm

d = 2r = 2(8.0) = 16.0 mm

You are looking for the diameter, not the radius. The correct answer is A.
Diameter=circumference/PI

No, not C.