Question

water is precious we cant live a single day without water, we should not waste even a single drop of water ? Explain the statment

Answer 1

Explanation:

Water the most important thing for livelihood.Without water a human can survive just a week hardly.It is important as also it provides essential nutrients.

Today, water is one of the main issues in the society.Water of many countries has been estimated to be finished by 2022.In countries like India and China water issues are the biggest issues.

If their will be world war 3 it will be definetely because of water.Water scarcity has increased because uncontrolled overpopulation.As the population is increased more water is needed.In future the world will fight over to capture the water.So that the country can live without scarcity.There is a need to stop this.

Water conservation is needed for sure.To conserve water we need to take the following steps:-

1) Save water whenever possible.Even a single drop should not be wasted.

2) Rain water harvesting to be done in each and every house.

3) Machines should be made that can purify polluted water.

4) Peopke should use lifestraw a device that can purify even the dirtiest water.

5) We need to do this togeather no one can do it alone.There must be global awareness.

At the end I would say water is the precious stone of life, use it wisely, dont waste or pollute it.

Hope it well help you

Answer 2

Answer:

The length, area and the perimeter of the rectangle are 21cm, 420 cm² and 82 cm respectively.

Step-by-step explanation:

Let the rectangle be ABCD.

According to the question :

➟ Diagonal : BD = 29cm

➟ Breadth : CD = 20cm

All the angles in a rectangle are 90°.

So, ∆BDC is a right angled triangle with ∠BCD = 90°. Using pythagoras theorem :

➟ (P)² + (B)² = (H)²

➟ (BC)² + (20)² = (29)²

➟ BC² + 400 = 841

➟ BC² = 841 – 400

➟ BC² = 441

➟ BC = √441

➟ BC = 21cm

∴ The length of the rectangle BC is 21 cm.

Now, let's find the area of the rectangle :

➟ Area of rectangle = Length × breadth

➟ A = 21cm × 20cm

➟ Area = 420cm²

∴ The area of the rectangle is 420 cm².

Finally, finding the perimeter of the rectangle :

➟ Perimeter = 2 (l + b)

➟ P = 2 (21cm + 20cm)

➟ P = 2 (41cm)

➟ Perimeter = 82cm

∴ The perimeter of the rectangle is 82 cm.

Explanation: