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Rajesh Sahu

· started a discussion

· 1 Months ago

either question or solution is wrong (Question: 119465.0 )

plz check

Question:
A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m by 1.1 m and its walls are 5 cm thick. The thickness of the bottom is:
Options:
A) 1 dm
B) 1.1 m
C) 1.2 m
D) 1.5 m
Solution:

Knowledge Expert

· commented

· 1 Months ago

Dear student
Given data: length=3.3m,width=2.6m, height=1.1m Volume of cistern=8000 litres, thickness of walls is 5 centimetres
To Find- The thickness of the bottom of the tank=?
We know that 1 litre=1000 cubic centimetres.
Hence the length of cistern =3.3m=330cm
the width of cistern=2.6m=260cm
the height of cistern=1.1m=110cm
Now the walls of the cistern are 5cm thick, hence the inner length of the cistern is 330-10=320cm
and inner width of the cistern=260-10=250cm
Now the total volume of the cistern is 8000litres = 8000000 cubic centi-metres
8000000=320*250* x
Let x be the internal height of the tank
8000000=80000*x
x=8000000/80000
Hence x=100 centimetres
Thus the thickness of the bottom is 110-100cm=10cm
The thickness of the bottom is 10 centimetres.
10cm=1 dm

Regards
Team TR

Knowledge Expert

· commented

· 1 Months ago

Dear Student,
We have resolved the issue occured.
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