Question

What is the radius, in centimeters, of a circle that has a circumference of 18 1/2

Answer 1

Circumference = 2πr

where c is the circumference and r is the radius

π = 22/7

`18\text{ 1/2= 2}*(22)/(7)* r`
`(37)/(2)=(44r)/(7)`

cross-multiply

`259=88r`

Divide both-side by 88

r= 2.94 cm