Question

find the curved surface area of a cone with base radius 5.25 cm and slant height 10 cm.​

Answer 1

Answer:

165 $cm^{2}$

Step-by-step explanation:

22/7 * 5.25 * 10 = 165

Answer 2

Step-by-step explanation:

Given:-

Radius of the base is 5.25 cm and slant height is 10 cm of a cone.

To find:-

Find the Curved Surface Area of the cone ?

Solution:-

Given that

Radius of the base of the cone = 5.25 cm

Slant height of the cone = 10 cm

We know that

Curved Surface Area of a cone = πrl sq.units

On substituting these values in the above formula then

=> CSA = π×5.25×10 sq.cm

=> CSA = (22/7)×5.25×10 sq.cm

=> CSA = (22×5.25×10)/7 sq.cm

=> CSA = 1155/7 sq.cm

=> CSA = 165 sq.cm

Answer:-

Curved Surface Area of the given Cone is

165 sq.cm

Used formulae:-

• Curved Surface Area of a cone = πrl sq.units

• π= 22/7

• r = radius of a cone

• l = slant height of a cone

• l = √(h^2+r^2) units

• h = height of a cone