Question

Find the curved surface area of a right circular cone

whose slant height is 10cm and base radius is 7cm.​

Answer 1

Step-by-step explanation:

Curved surface area =πrl

=22/7 ×7×10

=220 cm square

Answer 2

Given :-

Slant height of a cone = 10 cm

Base radius of a cone = 7 cm

To Find :-

The curved surface area of a right circular cone.

Analysis :-

Substitute the values in it's respective formula of CSA and find it accordingly.

Solution :-

We know that,

• l = Slant height
• r = Radius
• CSA = Curved Surface Area

By the formula,

$\underline{\boxed{\sf Curved \ surface \ area \ of \ cone=\pi r l}}$

Given that,

Slant height (l) = 10 cm

Radius (r) = 7 cm

Substituting their values,

CSA  = 3.14 × 7 × 10

CSA = 219.8

Therefore, the curved surface area of a right circular cone is 219.8.