the height of a cylinder is 21 cm and diameter is 7 cm find its curved surface area
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Answered by
1
Diameter= 7 cm
therefore, radius=7/2= 3.5 cm
so,
CSA of cylinder=2πrh=2 x 22/7 x 21 x 3.5 x 3.5=2 x 22 x 3 x 3.5 x 3.5 = 1617cm²
therefore, radius=7/2= 3.5 cm
so,
CSA of cylinder=2πrh=2 x 22/7 x 21 x 3.5 x 3.5=2 x 22 x 3 x 3.5 x 3.5 = 1617cm²
Answered by
1
The answer is 442 cm is the correct answer
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