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22 votes
22 votes
Can you please help me out with a question

User Manuel Montero
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1 Answer

18 votes
18 votes

ok. so the figure is composed by a hemisphere and a cillinder

to find the volume of an hemisphere we use the following formula:


A_h=2\pi r^2

The diameter is 16ft, so the radius is 8ft


V_h=2\pi(8ft)^2=128\pi ft^2

for the cillinder, the volume can be calculated with:


A_c=h\cdot\pi\cdot\text{diameter}=9ft\cdot\pi\cdot16ft=144\pi

and for last the base of the cilinder has an area of


A_b=\pi r^2=\pi(8ft)^2=64\pi

adding all up:


64\pi+144\pi+128\pi=336\pi

User MR Mido
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2.9k points