Find the weight of a hollow sphere of metal having internal and external diameters as 20 cm and 22 cm, respectively if 1m³ of metal weighs 21g.

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Solution

External radius of hollow sphere, $r_{1} = \frac{22}{2}$ = 11 cm

Internal radius of hollow sphere, = 10 cm

The volume of hollow sphere = $\frac{4}{3} π ({r_{1}}^{3} - {r_{2}}^{2})$

The volume of hollow sphere

The weight of hollow sphere

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Find the weight of a hollow sphere of metal having internal and external diameters as 20 cm and 22 cm, respectively if 1m3 of metal weighs 21g.

External radius of hollow sphere, r1=222 = 11 cm Internal radius of hollow sphere, = 10 cm The volume of hollow sphere = 43πr13-r22 The volume of hollow sphere The weight of hollow sphere

Find the weight of a hollow sphere of metal having internal and external diameters as 20 cm and 22 cm, respectively if 1m³ of metal weighs 21g.

External radius of hollow sphere, $r_{1} = \frac{22}{2}$ = 11 cm

Internal radius of hollow sphere, = 10 cm

The volume of hollow sphere = $\frac{4}{3} π ({r_{1}}^{3} - {r_{2}}^{2})$

The volume of hollow sphere

The weight of hollow sphere