Question

CSA of cone is 308 sq and its height is 14 cm find its base diameter​

Answer 1

Answer:

Given :

Curved surface area of the cone =308cm

2

and Slant height or l=14 cm.

Curved surface area of the cone =πrl

308=

7

22

×r×14

r=

(22×14)

(308×7)

r=7cm

Total surface area of the cone =πr(r+l)

=(

7

22

×7)(7+14)

=22×21

Total surface area of the cone =462cm

2

So, the radius of the base of the cone is 7 cm and the total surface area of the cone is 462cm

2

.