Question

The diameter of a circle is 6 3/5 inches.
What is the radius, r, of the circle?
r = ___

Answer 1

3.3 inches

Explanation:

We Know

The diameter of a circle is 6 3/5 inches.

6 3/5 = 33/5 = 6.6 inches

What is the radius, r, of the circle?

The diameter is twice the radius to find the radius we take

6.6 ÷ 2 = 3.3 inches

So, the radius of the circle is 3.3 inches.

Answer 2

radius = 3
`(3)/(10)` inches

Explanation:

the radius r of a circle is half the diameter , then

r = 6
`(3)/(5)` ×
`(1)/(2)` (change mixed number to an improper fraction )

=
`(33)/(5)` ×
`(1)/(2)`

=
`(33(1))/(5(2))`

=
`(33)/(10)`

= 3
`(3)/(10)`