the CSA of cone of height 15cm and radius 8cm is __ cm
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CSA of cone= π x r x l
l²= r² + h²( pythagorean theorem)
l²= 8² + 15²
l²= 64+225= 289
l= 17 cm
CSA= 22/7 x 8 x 17
CSA= 377.14 cm²
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