Question

What is the radius of a circle with the circumference of 104 cm? round to the nearest tenth.

Answer 1

Answer:

16.55cm

Explanation:

c=πd

104=22÷7d

multiply all sides by 7

728=22d

divide all sides by 22 to get d=33.09

r=d ÷2

r=33.09÷2

=16.55cm

Answer 2

Answer:

radius=20

Explanation:

c= circumference

c=2$\pi$r

104=2$\pi$r

$\frac{104}{2\pi }$=r

$\frac{104}{6.28}$=r

16.56=r

20=r (to the nearest 10)