The circumference of a circular table is 816.4 centimeters. Find the radius of the table. Use 3.14 as an approximation for pi.

Question

I tried multiple times but still am not able to figure this out.

Answer 1

C = pid = pi(2r) = about 3.14(2r) = 816.4

6.28r = 816.4

r= 816.4/6.28 = 130 cm = radius

diameter = 260 cm

circumference =260(3.14) = 816.4