Question

find the slant hight of the cone whose base radius and hight is 3cm and 4cm,
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Answer 1

Answer:

r=3 cm and h=4 cm

Let l be the slant height of the cone. Then,

l

2

=r

2

+h

2

l

2

=3

2

+4

2

l=5 cm

Therefore,

Area of the curved surface = πrl=

7

22

×3×5=47.14 cm

2

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Answer 2

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