Question

A circle has an area of 133 m².

Work out the radius of the circle.
Give your answer correct to 1 decimal place.

Answer 1

r≈6.5m

Explanation:

A- area o circle

A=πr²

A=133m²

πr²=133

r²=
`(133)/(\pi)`

r=
`\sqrt{(133)/(\pi) }`m

r≈6.5m

Answer 2

r=√A/π

then

r=√133/π

just use a calculator and the answer should be

r=6.5