Question

an ice fisherman wishes to cut a hole in the ice which has a diameter of 30 cm. How far around must he cut to create this hole?

Answer 1

Given:

Diameter of the hole = 30 cm

To find:

The area of the hole.

Solution:

The radius of a circle is always half of the diameter. It is given that the diameter of the hole is 30 cm. So, the radius of the hole is:

`r=(30)/(2)`

`r=15`

Area of a circle is:

`A=\pi r^2`

Putting
`\pi = 3.14` and
`r=15` in the above formula, we get

`A=(3.14)(15)^2`

`A=(3.14)(225)`

`A=706.5`

Therefore, the area of the hold is 706.5 square cm.