Question

The radius and height of a cylinder are in ratio 7:2. If the volume of the cylinder is 8316 cm cube , find the total surface area of the cylinder​

Answer 1

Answer:

πr2h=8316

22/7*7x*7x*2x=8316

x3=8316/308

x=3

r=21cm

h=6cm

tsa=2πr2+2πrh

tsa=2*22/7*21*21+2*22/7*21*6

tsa=2772+792

tsa=3564cm2