Question

Calculate volume of cube in which l = 5 cm and h = 3 cm

Answer 1

solution

5^2= 3^2+ r^2

=> 25 = 9= r^2

=> r^2= 16

=> r= 4

so,,area= 1/3 pi r^2h


= 1/3* pi 16* 3

= 16 pi+ pi16

= 32pi.

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hope it helps...