Find the curved surface area of the frustrum in the figur...
Find the curved surface area of the frustrum in the figure
16π√10cm2
20π√10cm2
24π√10cm2
36π√10cm2
Correct answer is B
x4=6+x6
6x = 4(6 + x) = 24 + 4x
x = 12cm
CSA = πRL−πrl
= π(6)√182+62−π×4×√122+42
= 6π√360−4π√160
= 36π√10−16π√10
= 20π√10cm2
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