Peter charges $5 an hour for babysitting. So far, he has earned
$75. How many more hours does he
need to babysit in order to earn a
total of $180?

21 more hours

Step-by-step explanation:

Divide $75 by $5 to know how many hours he worked for. 75/5 is 15. So he worked for 15 hours so far.

Then find out how many hours will make $180. 180/5 = 36 hours. He needs to work 36 hours to earn $180 but he already worked 15. So, find the amount left. 36 - 15 is 21 hours.

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !