Question

7. If the radius of a solid cylinder is 3 cm and height is 4 cm, then find its total surface area​

Answer 1

l =

$\sqrt{4 {}^{2} + 3 {}^{2} }$

Total surface area of remaining solid

=CSA of cone +CSA of cylinder + area of base of cylinder

=πrl+2πrh+πr^2

=πr(l+2h+r)

=π×3×(5+2×4+3)

=π×3×16

=48πcm^2

Answer 2

Answer:

Answer in attachment...