Question

A hemispherical tank is made of an iron sheet 1cm thick. If the inner radius is 1m, find the outer curved surface area.

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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

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Given:

⇒Inner radius r

l

=1m=r

1

⇒Thickness =1cm=0.01m

⇒Outer radius =1+0.01=1.01m=r

0

⇒Volume of iron used

=

3

2

π(r

0

2

−r

l

2

)

=

3

2

×

7

22

×((1.01)

3

−(1)

3

)

=0.0634cm

3