Question

Write the ratio of total surface area to the curved surface area of a cylinder of radius r and height h.

Answer 1

$\because$ Radius = r

and height = h

$\therefore$ Curved surface area = $2\pi$ rh

and total surface area = $2\pi$ r (h+r)

$\therefore$ Ratio = $2\pi$ r (h+r) : $2\pi$ rh

= h + r : h