Question

The sum of the radius of base and height of a solid right circular cylinder is 37 cm. If the total surface area of the solid cylinder is 1628 sq. cm, find the volume of the cylinder. `("use " pi=22/7)`

Answer 1

Let the radius of base and height of the solid right circular cylinder be r cm and h cm, respectively.

According to the question,

r+h=37                 .....(1)

Total surface area=1628 sq cm

2πr(r+h)=1628   .....(2)

From (1) and (2), we get

2πr(37)=1628

⇒ 2πr=44

`=>2xx22/7xxr=44`

`=>r=(44xx7)/(2xx22)`

⇒ r = 7 cm

Substituting the value of r in (1), we get

7+h=37

⇒ h = 30 cm

Now,

Volume of the cylinder = πr²h

`=22/7xx7xx7xx30`

=4,620 cm³

Hence, the volume of the cylinder is 4,620 cm³.