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The shape of a gilli, in the gilli-danda game (see Fig. 12.4), is a combination of
a. two cylinders
b. a cone and a cylinder
c. two cones and a cylinder
d. two cylinders and a cone

The shape of a gilli, in the gilli-danda game (see Fig. 12.4), is a combination of a. two cylinders, b. a cone and a cylinder, c. two cones and a cylinder, d. two cylinders and a cone

Solution:

We know that

The shape of a gilli, in the gilli-danda game (see Fig. 12.4), is a combination of a. two cylinders, b. a cone and a cylinder, c. two cones and a cylinder, d. two cylinders and a cone

Which is

= Cone + cylinder + Cone

= Two cones and a cylinder

Therefore, the shape of a gilli, in the gilli-danda game is a combination of two cones and a cylinder.

✦ Try This: State true or false:

Two identical solid hemispheres of equal base radius r cm are stuck together along their bases. The total surface area of the combination is 6πr².

We know that

Curved surface area of a hemisphere = 2πr²

It is given that

Two identical solid hemispheres of equal base radius r cm are stuck together

So the base is common for both the hemispheres

Here

Total surface area of the combination = 2πr² + 2πr² = 4πr²

Therefore, the statement is false.

☛ Also Check: NCERT Solutions for Class 10 Maths Chapter 13

NCERT Exemplar Class 10 Maths Exercise 12.1 Problem 5