Find the volume $ V $ of a cylinder if diameter $d = 20$ and height $h = 20$.
Answer
$V = 2000\pi$
Explanation
STEP 1: find radius $ r $
To find radius $ r $ use formula:
$$ d = 2 \cdot r $$After substituting $ d = 20 $ we have:
$$ 20 = 2 \cdot r $$ $$ r = \dfrac{ 20 }{ 2 } $$ $$ r = 10 $$STEP 2: find volume $ V $
To find volume $ V $ use formula:
$$ V = r ^{ 2 } \cdot h \cdot \pi$$After substituting $ r = 10 $ and $ h = 20 $ we have:
$$ V = 10 ^{ 2 } \cdot 20 \cdot \pi$$$$ V = 100 \cdot 20 \cdot \pi $$$$ V = 2000\pi $$This page was created using
Cylinder Calculator