Find the total area of a hemisphere and it's radius is 20
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area of hemisphere
= 4/3 * 22/7 * 20 *20 * 20
=33523.80 units square
= 4/3 * 22/7 * 20 *20 * 20
=33523.80 units square
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Answer:
Step-by-step explanation:
TSA of hemisphere =3×22/7×r^2.
=3×22/7×20×20
=3×22/7×400
=3768cm^2
So,tsa of hemisphere is 3768cm^2
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