Question

find the curved surface area of a right circular cone whose slant height is 10 cm and base radius is 7cm

Answer 1

Curved surface area of right circular cone = πrl
22÷7×7×10
220

Answer 2

Answer:

219.8 cm square.

Step-by-step explanation:

Given : slant height is 10 cm and base radius is 7cm

To Find: find the curved surface area of a right circular cone

Solution:

Formula of curved surface area of cone = $\pi r l$

Where r is radius and l is slant height

Since we are given slant height is 10 cm and base radius is 7cm

So, Curved surface area of cone = $3.14\times 7 \times 10$

                                                      = $219.8$

Hence the curved surface area of cone is 219.8 cm square.