Question

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

Answer 1

radius=20

Step-by-step explanation:

c= circumference

c=2
`\pi`r

104=2
`\pi`r

`(104)/(2\pi )`=r

`(104)/(6.28)`=r

16.56=r

20=r (to the nearest 10)

Answer 2

16.55cm

Step-by-step 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