Find the circumference $ C $ of a circle if diameter $d = 1200$.
Answer
$C = 1200\pi$
Explanation
STEP 1: find radius $ r $
To find radius $ r $ use formula:
$$ d = 2 \cdot r $$After substituting $ d = 1200 $ we have:
$$ 1200 = 2 \cdot r $$ $$ r = \dfrac{ 1200 }{ 2 } $$ $$ r = 600 $$STEP 2: find circumference $ C $
To find circumference $ C $ use formula:
$$ C = 2 \cdot r \cdot \pi $$After substituting $ r = 600 $ we have:
$$ C = 2 \cdot 600 \cdot \pi $$ $$ C = 1200\pi $$This page was created using
Circle Calculator