Find the curved surface area of the cone whose radius is 7 cm and slant height 25 cm.​

Correct option is A

Given:

Radius of cone = 7cm

Slant height = 25 cm. 

Formula Used:

curved surface area = $$\pi rl$$ 

where r = radius of cone , l = slant height of the cone 

Solution:

Curved surface area =$$\pi rl$$  = $$\frac{22}{7} \times 7 \times 25$$  = 550 cm²​