Question

I need help for these two questions

Answer 1

Explanation:

Srface area = πr(r + L) where r = radis of the base and L = the slant height.

9. S.A. = π12(12 + 19)

= 144 π + 228 π

= 372 π

10 S.A. = π4(4 + 9)

= 16 π + 36 π

= 52 π