Question

You have 13 gallons of lemonade to sell. You use cone-shaped cups that are 7 centimeters in diameter and 11 centimeters tall. Each customer uses one paper cup. How many paper cups will you need if you sell all of the lemonade? (1 gal ≈ 3785 cm3)

Answer 1

Answer:

87

Step-by-step explanation:

the formula for the volume of a cone is  $\frac{1}{3}$$\pi$$r^{2}$h

then one cone is

$\frac{1}{3}$$\pi$$7^{2}$11

= 564.43948 $cm^{3}$

3785*13/ 564.43948 = 87.1749 cups

so 87 full cones ,but when would you ever really fill the cones to the very top?  soo maybe a few more,  but by math, you'd only need 87