Question

Esther and Jim plan to + a pond to their property. The area of the pond is 11 square meters.

What is the radius?

remember, a= πr² . Use π = 22/7

A √3
B √7/2
C 3
D 7/2

Answer 1

The answer is B :))))

Answer 2

The correct option is B)
`radius= \sqrt{(7)/(2)}`

Explanation:

The area of the pond is 11 square meters.

Also,the given area is
`a=\pi r^(2)` where
`\pi = (22)/(7)`

Put the value of area and π in provided formula,

`a=\pi r^(2)`

`11=(22)/(7) r^(2)`

Multiply both the sides by 7,

`7* 11=7* (22)/(7) r^(2)`

`77=22* r^(2)`

Divide both the sides by 22,

`(77)/(22)=r^(2)`

simplify the above

`(7)/(2)=r^(2)`

Take square root on above expression

`\sqrt{(7)/(2)} = r`

Hence,
`r= \sqrt{(7)/(2)}`

Therefore, the correct option is B)
`radius= \sqrt{(7)/(2)}`