Question

Q2)Surface area of hemisperical dome of radius 7 M is
●154
●308
●616
●77​

Answer 1

Answer:

616

Step-by-step explanation:

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Answer 2

Answer:

The total surface area of a solid hemisphere is 462cm?

Given:

Radius of the solid hemisphere is 7cm

To find:

Total surface area of the solid hemisphere

We know that

Formula for TSA is 3 r2

Where 3 is a constant n=3.14 or 22/7 and r =radius of the solid hemisphere=7cm

Hence we know all the terms to calculate the TSA

So by substituting the values in the formula we get

= 3 π r²

= 3 x 3.14 x 7²

= 3 x 3.14 x 49

= 461.58cm²

3πr²

or,

= 3 x 22/7 x 72²

= 3 x 22 x 7

= 462cm²

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