Question

You run around the perimeter of the baseball field at a rate of 9 feet per second. How long does it take you to run around the baseball field to the nearest tenth of a second?

Answer 1

`129.5\ sec`

Explanation:

Step 1

Find the circumference of
`40\%` of a circle

The formula is equal to

`C=0.40(2\pi r)`

we have

`r=225\ ft`

substitute

`C=0.40(2\pi (225))=180 \pi\ ft`

Step 2

Find the perimeter of the baseball field

`P=180 \pi+300*2=1,165.49\ ft`

Step 3

Find how long does it take you to run around the baseball field

Divide the perimeter by the rate

`t=1,165.49/9=129.5\ sec`