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Sarai uses 4 cm of face wash each night. The cylinder container of face wash is 10 cm tall and has a diameter of 5 cm. The container is half empty. How many more days will the face wash last her? Round your answer to the nearest whole number.

Sagot :

iGreen
Find the volume of the cylinder and divide by 2.

V = pi * r^2 * h

Plug in what we know:

V = 3.14 * 2.5^2 * 10

V = 196.25

196.25 / 2 = 98.125

So the container contains 98.125 of face wash.

Now we divide this by 4 to see how many days it will last her.

98.125 / 4 = 24.53 = 25

So the face wash will last her about 25 more days.
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