Very important question of mensuration including

very important concept of it.need solution!

Rd sharma class 10 maths exercise-16.2 mensuration.

we have to find the inner surface area of the vessel.

given that a vessel 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 13cm.

Given,

Diameter of the hemisphere = 14 cm

So, the radius of the hemisphere = 7 cm

Total height of the vessel = 13 cm = h + r

Now,

Inner surface area of the vessel = 2 Ï€ r (h + r)

= 2 (22/7)(7) (13)

= 572 cm2

Therefore, the inner surface area of the vessel is 572 cm2