Question

2) A vessel is in the form of a hollow hemisphere mounted by a
hollow cylinder. The diameter of the hemisphere is 14 cm and
the total height of the vessel is 13 cm. Find the inner surface area
of the vessel.

Answer 1

Step-by-step explanation:

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Answer 2

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The given parameters are:

The diameter of the hemisphere = D = 14 cm

The radius of the hemisphere = r = 7 cm

Also, the height of the cylinder = h = (13-7) = 6 cm

And, the radius of the hollow hemisphere = 7 cm

Now, the inner surface area of the vessel = CSA of the cylindrical part + CSA of hemispherical part

(2πrh+2πr2) cm2 = 2πr(h+r) cm2

2×(22/7)×7(6+7) cm2 = 572 cm2