Question 73
The volume of a right circular cone is 1232 cm$$^3$$ and its height is 24 cm. What is its curved surface area?
(Take $$\pi = \frac{22}{7}$$)
Solution
volume of cone = $$\frac{1}{3}\times \pi\times r^2\times h$$
1232 = $$\frac{1}{3}\times \pi \times r^2\times 24$$
r= 7 cm
Curved surface area of cone =$$\pi \times r \times l $$
L = $$\sqrt{r^2 +h^2}$$
= 25 cm
Curved surface area of cone =$$\pi \times 7\times 25$$
= 550 $$cm^2$$
Get AI Help
Create a FREE account and get:
- Free SSC Study Material - 18000 Questions
- 230+ SSC previous papers with solutions PDF
- 100+ SSC Online Tests for Free
