Question

The volume of a right circular cylinder is 1100 cm^3 and the radius of its base is 5 cm. Find its curved surface area.

Answer 1

❏ Given that :-

• Volume of cylinder = 1100 cm³
• Base radius = 5 cm

❏ To find:-

• CSA of cylinder .

❏ Solution :-

Volume of cylinder = πr²h

According to the question

Volume = 1100cm³

1100 = 22/7 × 5² × h

$h \: = \: \frac{1100 \times 7}{22 \times 5 \times 5}$

$h \: = \: \frac{7700}{550}$

h = 14 cm

Now , as we know that CSA= 2πrh .

.°. CSA = (2 × 22 × 5 × 14 )/7

→ 3080/7

→ 440 cm²

Hence , CSA of cylinder is 440 cm²