The internal and external diameter of a hollow hemispherical vessel are 42cm and 45.5cm
respectively. Find its L.S.a and T.S.a of the hollow hemisphere.
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Answer:
TSA of Hemisphere is -- 3πr^2
LSA of Hemisphere is -- 4πr^2
Step-by-step explanation:
External diameter-- 45.5cm
Therefore it's radius is-- 22.75cm
By Applying the formula--3πr^2
= 3 × 22/7 × 22.75 × 22.75
=3 × 22 × 3.25 × 22.75
=4879.875 cm^2
Internal diameter-- 42cm
Therefore it's radius--21cm
By Applying the formula-4πr^2
=4 × 22/7 × 21 ×21
=5544 cm^2
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