Question

the area of the base of a right circular cone is 154 cm² and its height is 14cm .The curved surface of the cone.​

Answer 1

Solution

given>>>height (h)=14cm

let the base radius of the cube is =r cm

now. its base area=πr²

now..

πr²=154

=>r²=49

=>r=7 cm

now...

slant height(l)=√(r²+h²)=√(7²+14²)=7√5 cm

therefore.....

the curved surface area..

=πrl

=[(22×7×7√5)/7] cm²

=154√5 cm²

[now..√5=2 236]

=344.344 cm²

hope this helps you.....

Answer 2

Step-by-step explanation:

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