Math, asked by mamtateen6215, 1 year ago

MCQ

The total surface area of a cone of radius r/2 and length 2l is

(a)2*pie*r(l+r) (b) pie*r(l+r) (c) pie*r(l+r/4) (d) pie*r(l+r/2)

Answers

Answered by Rohit656
0
option C pie*r (l+r÷4) is corret when we put values in the formula pie×r×l+pie×r×r then it is pie×r/2×2l+pie×r/2×r/2 = pie×r×l+pie×r/4 = pie×r (l+r/4)
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