The height of a right circular cone is 10 cm and its base radius is 24 cm. What is the curved surface area (in cm²) of the cone?

Correct option is C

Given:

Height of the cone h = 10 cm
Radius of the base r = 24 cm
Formula Used:
Curved Surface Area of a cone = πrl
where: r = radius of the base, l = slant height of the cone
​$$l = \sqrt{r^2 + h^2}$$​
Solution:
​$$l = \sqrt{24^2 + 10^2} = \sqrt{576 + 100} = \sqrt{676} = 26 \, \text{cm}\\\text{CSA of cone} = \pi \times 24 \times 26 = 624\pi \, \text{cm}^2$$​​
The curved surface area of the cone is 624$$\pi$$​ cm².