Aptitude - Volume and Surface Area - Discussion

Discussion Forum : Volume and Surface Area - General Questions (Q.No. 2)
2.
In a shower, 5 cm of rain falls. The volume of water that falls on 1.5 hectares of ground is:
75 cu. m
750 cu. m
7500 cu. m
75000 cu. m
Answer: Option
Explanation:

1 hectare = 10,000 m2

So, Area = (1.5 x 10000) m2 = 15000 m2.

Depth = 5 m = 1 m.
100 20

Volume = (Area x Depth) = 15000 x 1 m3 = 750 m3.
20

Video Explanation: https://youtu.be/dDbVuBzYop8

Discussion:
52 comments Page 1 of 6.

Sayantani said:   3 years ago
Please explain the answer clearly to understand.
(3)

Divya said:   1 decade ago
After the rain falls on the ground, its height is measured. That is how the rainfal is generally measured.

now, coming to the problem, here, the height is 5cm = 5/100m.

volume=lbh

but area=lb

volume=area*h

hence, volume= 15000*5/100 =750
(3)

Rajnikanth said:   9 years ago
The volume of water that falls on 1.5 hectares(area) of ground

Conversion
{
1 hectare = 10,000 m^2.

So, Area = (1.5 x 10000) m^2 = 15000 m^2. //converting into meters.
}

5 cm of rain falls -- Depth(height) of the water from ground level.

Depth(height) = 5 cm = 5/100 m

Finding Volume

Considering/assuming ground as cuboid.

Volume = (Length*Breadth)*Height.
= Area * Height.
= 15000*5/100.
= 750 m^3.
(3)

Vignesh said:   5 years ago
Thank you @Divya.
(1)

Sougata said:   8 years ago
If the rain is falling vertically.

And the area covered is base then it's forming a right angle tri angle,
So we know v=length * breadth * height.
Also, that length*breadth = area.
So,
V = 15000 * 0.05,
So, v = 750.
(1)

Leo said:   9 years ago
@Gunjan.

1000 cu.m.

Gunjan said:   9 years ago
In a shower, 5 centimetres of rainfall find the volume of water that falls on 2 hectares of land.

Find the answer.

Rakesh said:   8 years ago
How can I recognised that volume = area * depth and depth from where found please give me the answer if anybody know?

Rushad said:   8 years ago
Thankyou so much @Divya.

Arpita said:   8 years ago
Thanks for all the given explanation.


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