Question 91

If curved surface area of a cylinder is 1320 sq cm and height is 10 cm, find its radius?

Solution

Let radius of cylinder = $$r$$ cm and height = 10 cm

Curved surface area of cylinder = $$2 \pi r h = 1320$$

=> $$2 \times \frac{22}{7} \times r \times 10 = 1320$$

=> $$\frac{44}{7} \times r = \frac{1320}{10} = 132$$

=> $$r = 132 \times \frac{7}{44}$$

=> $$r = 3 \times 7 = 21$$ cm

Share on Whatsapp Share on Whatsapp

Create a FREE account and get: