Question

The seventh- grade class is building a mini- golf game for the school carnival. The end of the putting green will be a circle if the circle is 10 feet in diameter, how many square feet of grass carpet will they need to buy the cover the circle

Answer 1

78.5 square feet of grass carpet will they need to buy to cover the circle.

Explanation:

Given

Diameter of a circle = 10 feet.

To find:

The grass carpet area need to cover the circular part.

Solution:

For circular part area is given as

`\textrm{area of circle} = \pi * r^(2)`

where r is the radius of the circle

d be the diameter of circle.

Also we know the radius is equal to half of the diameter.

∴
`r = (d)/(2) \\r = (10)/(2)\\r = 5\ feet`

substituting the value of r i.e radius in the above formula we get

`\textrm{area of circle} = \pi * 5^(2)`

`= 3.14* 25\\= 78.5\ square\ feet`

Therefore,78.5 square feet of grass carpet will they need to buy to cover the circle.