the volume of a hemisphere is 2425/2 cm^3 find its CSA ?
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Here is your answer buddy,
(Given) Volume of the hemisphere = 2425 1/2
therefore,
2/3 πr^3 = 2425 1/2
=> 2/3 πr^3 = 4851/2
=>r^3 = 4851×3×7/2×2×22
=> r^3 = 441×21/2×2×2
=> r^3 = 21×21×21/2×2×2
=> r^3 = (21/2)^3
=> r = 21/2
Now the CSA = 2πr^2
= 2×22×21×21/7×2×2
= 693 cm^3
Hope this helps you
(Given) Volume of the hemisphere = 2425 1/2
therefore,
2/3 πr^3 = 2425 1/2
=> 2/3 πr^3 = 4851/2
=>r^3 = 4851×3×7/2×2×22
=> r^3 = 441×21/2×2×2
=> r^3 = 21×21×21/2×2×2
=> r^3 = (21/2)^3
=> r = 21/2
Now the CSA = 2πr^2
= 2×22×21×21/7×2×2
= 693 cm^3
Hope this helps you
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