Question

fiven area of base of cone is 616cm2 and height is 48 cm find the.s.a of cone
​

Answer 1

Answer:

Given the area of the base of a cone is 616 cm

2

.

If r be the radius of the base of the cone then

πr

2

=616

or,

7

22

×r

2

=616

or, r=14.

Also, given height (h)=48 cm.

Then slant height (l)=

48

2

+14

2

=2

625

=50 cm.

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

7

22

×14×64=2816 cm

2

.

Answer 2

Answer:

2200 sq.cm

Step-by-step explanation:

Area of the circular base= 616 sq.cm

By simplification we get radius = 14 cm.

By further simplification we get l= 50 cm.

CSA of the cone= pie X l x r

                            =22/7 X 14 X 50

                             = 2200 sq.cm

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