Question

Johanna is selling cheese at the farmers’ market. One wheel of cheese has a diameter of 9 inches.

What is the are of the wheel of cheese? Use 3.14 for pi.
_____
|_____| square inches

Answer 1

`a=63.585`
`in^(2)`

Explanation:

Radius = 9/2 = 4.5

`a=\pi r^(2)`

`a=3.14(4.5)^(2)`

`a=3.14(20.25)`

`a=63.585`
`in^(2)`

Answer 2

63.585 square inches.

Explanation:

We have been given that Johanna is selling cheese at the farmers’ market. One wheel of cheese has a diameter of 9 inches.

We know that wheel of cheese is in form of circle, so we will use area of circle formula to solve our given problem.

`\text{Area of circle}=\pi r^2`, where, r represents radius of circle.

We know that diameter is 2 times radius:

`d=2* r`

`9=2* r`

`(9)/(2)=(2* r)/(2)`

`4.5=r`

`\text{Area of of the wheel of cheese}=3.14*(\text{4.5 in})^2`

`\text{Area of of the wheel of cheese}=3.14*20.25\text{ in}^2`

`\text{Area of of the wheel of cheese}=63.585\text{ in}^2`

Therefore, the area of the wheel of cheese is 63.585 square inches.