Question

Round to the nearest tenth. Use 3.14 or 22/7 for π.​

Answer 1

Note: Consider we need to find the circumference and area of the given circle.

Given:

A circle with radius 7.1 m.

To find:

The circumference and area of the given circle.

Solution:

Circumference of a circle is:

`C=2\pi r`

Putting
`r=7.1,\pi=3.14`, we get

`C=2(3.14)(7.1)`

`C=44.588`

`C\approx 44.6`

Therefore, the circumference of the circle is 44.6 m.

The area of the circle is:

`A=\pi r^2`

Putting
`r=7.1,\pi=3.14`, we get

`A=3.14(7.1)^2`

`A=158.2874`

`A\approx 158.3`

Therefore, the area of the circle is 158.3 sq. m.