Question

The circumference of a circle is 60π cm. What is the radius of the circle? 120 cm 60 cm 90 cm 30 cm

Answer 1

The answer is 30 CM.
Circumference is pi× diameter
So the diameter is 60.
1/2 of diameter is radius
60÷2= 30

Answer 2

Option 4th is correct

radius of the circle is, 30 cm

Explanation:

Circumference of the circle(C) is given by:

`C = 2 \pi r` .....[1]

where,

r is the radius of the circle.

As per the statement:

The circumference of a circle is 60π cm

⇒C = 60π cm

Substitute this value in [1] we have;

`60 \pi = 2 \pi \cdot r`

Divide both sides by
`2 \pi` we have;

30 = r

or

r = 30 cm

Therefore, the radius of the circle is, 30 cm