Question

Can anyone ans this question? I need it urgently...​

Answer 1

Answer to the Question no.17

Total surface area of cone = πr(r+l)

Given,

radius = r/3

Slant height = 31

Then,

Area = π×r/3(r/3+31)

= π(r²/9+31r/3)

Area of the question no.18

Use the formula used above

Answer 2

Answer:

I hope you got your answer