Question

A washing machine is being redesigned to handle a greater volume of water. One part is a pipe with a radius of 3 cm and a length of 11 cm. It gets replaced with a pipe with a radius 4 cm and the same length.
How many more cubic centimeters of water can the new pipe hold? Write answer in terms of π
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Answer 1

Answer:

$11$

Step-by-step explanation:

Method A

$(3*\pi )*11\approx103.62$

$(4*\pi )*11\approx138.16$

$138.16-103.62=34.54$

$34.54\div\pi\approx11$

Method B

$3\pi*11=33\pi$

$4\pi*11=44\pi$

$44\pi-33\pi=11\pi$