Find the volume $ V $ of a sphere if diameter $d = 19.2$.
Answer
$V = 122.88\pi$
Explanation
STEP 1: find radius $ r $
To find radius $ r $ use formula:
$$ d = 2 \cdot r $$After substituting $ d = 19.2 $ we have:
$$ 19.2 = 2 \cdot r $$ $$ r = \dfrac{ 19.2 }{ 2 } $$ $$ r = 9.6 $$STEP 2: find volume $ V $
To find volume $ V $ use formula:
$$ V = \dfrac{ 4 \cdot r^2 \cdot \pi}{ 3 } $$After substituting $ r = 9.6 $ we have:
$$ V = \dfrac{ 4 \cdot 9.6^2 \cdot \pi}{ 3 } $$ $$ V = \dfrac{ 4 \cdot 92.16 \cdot \pi}{ 3 }$$ $$ V = \dfrac{ 368.64 \cdot \pi}{ 3 }$$ $$ V = 122.88 \cdot \pi $$This page was created using
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