Question

find the height of a cylinder whose base radius is 7cm and the total surface area is 1936 sq cm

Answer 1

let height be 'h'
radius=7cm

Total surface area=1936cm sq
$total \: surface \: area = 2\pi \: r(h + r)$
$1936 = 2 \times \frac{22}{7} \times 7(7 + h)$
$1936 \times \frac{1}{2} \times \frac{7}{22} \times \frac{1}{7} = 7 + h$

44=7+h
44-7=h

h=37

height is 37cm

Answer 2

I hope 37 is a answer.
it will help you