Question

The radius of he base of the cone is 5cm and its height is 12cm then findsits curved surface area and volume.​

Answer 1

Answer:

65π

Step-by-step explanation:

The curved surface area of a cone is πrl, where r is the radius and l is slant height

We need to calculate slant height, it can be done by using the formula l =r ² +h ²

, where h is height.

So, l = r ² +h ²

= 5 ²+12²

=13

We have curved surface area of a cone is πrl =π×5×13 =65π cm

Hence, the answer is 65π cm

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Answer 2

Answer:

C.S.A=188.57 cm²and Volume =3771.43cm³

Step-by-step explanation:

C.S.A=pie×r×l

l²=r²+h²

=25+144

l=13cm

C.S.A=22/7×5×12

C.S.A=188.571cm²=188.57 cm².

Volume =1/3×pie×r²×h²

=1/3×22/7×25×144

Volume = 3,771.428cm³=3771.43cm³.

HOPE THIS HELPS!