From a rectangular solid of metal 42 cm by 30 cm by 20 cm, a conical cavity of diameter 14 cm and depth 24 cm is drilled out. Find:(iii) the weight of the material drilled out if it weighs 7 gm per cm3.

Home » From a rectangular solid of metal 42 cm by 30 cm by 20 cm, a conical cavity of diameter 14 cm and depth 24 cm is drilled out. Find:(iii) the weight of the material drilled out if it weighs 7 gm per cm3.

Class 10 | Cylinder, Cone and Sphere (Surface Area and Volume) | Exercise 20E | ICSE | Selina

From a rectangular solid of metal 42 cm by 30 cm by 20 cm, a conical cavity of diameter 14 cm and depth 24 cm is drilled out. Find:(iii) the weight of the material drilled out if it weighs 7 gm per cm3.

Selina Solutions Concise Class 10 Maths Chapter 20 ex. 20(E) - 2

$\left( iii \right)\text{ }Weight\text{ }of\text{ }material\text{ }drilled\text{ }out\text{ }=\text{ }1232\text{ x }7g\text{ }=\text{ }8624g\text{ }=\text{ }8.624\text{ }kg$

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