Question

SO
9.1 INTRODUCTION
Since independence, India has launched a number of economic plans, to attain economic
development at a quicker pace. However, the economic development that we have achieved
far has come at a very heavy price --- at the cost of environmental quality.
Liberalisation, Privatisation and Globalisation (LPG) have resulted in the development of the
economy, but with the adverse consequences on our environment. So, we have to bear in mind
the adverse consequences of the past development path on our environment and consciously
choose a path of sustainable development.
In this chapter, we will discuss:
• Meaning, functions and role of environment;
• Environmental challenges facing India; and
Steps and strategies to achieve sustainable development.​

Answer 1

Your answer

Answer:

Given :-

Volume of a cylinder is 2376 cm. The diameter of its base is 12 cm.

To Find :-

What is the height of a cylinder.

Formula Used :-

★ Volume of cylinder = πr²h ★

Solution :-

Given :

Volume of a cylinder = 2376 cm

Diameter of its base = 12 cm

First we have to find the radius,

We know that,

✰ Radius = Diameter ÷ 2 ✰

↦ Radius = 12 ÷ 2

➦ Radius = 6 cm

Now we have to find the height of the cylinder,

According to the question by using the formula we get,

⇒ 22/7 × (6)² × h = 2376

⇒ 22/7 × 36 × h = 2376

⇒ h = 2376 × 7/36 × 22

⇒ h = 16632/792

➠ h = 21 cm

∴ The height of the cylinder is 21 cm .

★ Let's Verify ★

⇒ 22/7 × (6)² × h = 2376

Put h = 21 we get,

⇒ 22/7 × 36 × 21 = 2376

⇒ 22/7 × 756 = 2376

⇒ 2376 = 2376

➦ LHS = RHS

Hence, Verified ✔