Question

Four times the area of the CSA of cylinder is equal to 6 times the sum of the sum of the area of its bases. If it's height is 14 cm. Find the CSA

Answer 1

CSA of the cylinder is 820.16
${cm}^{2}$

Answer 2

Let radius be r
A.T.Q,
4(CSA of cylinder) = 6 ( sum of 2 bases)
=> 4 (2 x π x r x 14) = 12πr²
=> 56πr = 12πr²
=> 56 = 12r
=> r = 56/12 = 14/3 cm
CSA = 2 (22/7) (14/3) (14) = 410.33 cm²
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