Question

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

Answer 1

Answer:

csa of cone=πrl.

if you don't now l then use this formula,

l=√r^2+h^2.

Answer 2

Given : Base radius of a cone is 5.25 cm and slant height 10 cm.

Radius (r) = 5.25 cm

Slant height (l) = 10 cm

 

 

We know that, Curved surface area of the cone = πrl

 Curved surface area of the cone = (22/7 × 5.25 × 10)

Curved surface area of the cone = 22 × 0.75 × 10  

Curved surface area of the cone = 22 × 7.5

Curved surface area of the cone  = 165 cm²

Hence, the curved surface area of a cone is 165 cm².

 

HOPE THIS ANSWER WILL HELP YOU…..

Similar questions :

Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.

https://brainly.in/question/1429702

 

The slant height and base diameter of a conical tomb are 25 m and 14 m respectively. Find the cost of white-washing its curved surface at the rate of Rs. 210 per 100 m².

https://brainly.in/question/15912103