Question

the internal and external
diameter of a hollow
baino hemispherical vessel are
42cm and 45.5 cm
respectively , find its
Capacity in litres​

Answer 1

Answer:

Step-by-step explanation:

Given Internal hollow hemispherical vessel r1 = 42cm. Then radius r = d/2 = 21.

Given External hollow hemispherical vessel r2 = 45.5cm. radius r = 22.75.

Capacity of hollow hemispherical vessel = 2/3 pir1^3

                                                                   = 2/3 * 22/7 * (21)^3

                                                                   = 2 * 22 * 21 * 21

                                                                  = 19.404 litres.

Outer's surface area = 2pir2^2

                                  = 2 * 22/7 * (22.75)^2

                                  = 3253.25 cm^3.

Hope this helps! :)

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