A box made of sheet metal costs 2820 at the rate of 30 rs per square meter if the box is 5 m long 4 m wide find its height
Answers
Answered by
147
Total cost=2820
Rate of cost=30/m^2
length of box=5m
breadth of box=4m
Area of metal sheet=2(lb+bh+lh)
=2(5×4+4h+5h)
=2(20+9h)
=40+18h
cost of sheet=area of sheet ×cost for 1m^2 of sheet
2820=(40+18h)×30
94=40+18h
18h=54
h=3
Rate of cost=30/m^2
length of box=5m
breadth of box=4m
Area of metal sheet=2(lb+bh+lh)
=2(5×4+4h+5h)
=2(20+9h)
=40+18h
cost of sheet=area of sheet ×cost for 1m^2 of sheet
2820=(40+18h)×30
94=40+18h
18h=54
h=3
Answered by
89
Answer:
The height is 3 m.
Step-by-step explanation:
Given : A box made of sheet metal costs 2820 at the rate of 30 rs per square meter if the box is 5 m long 4 m wide.
To find : Its height?
Solution :
Total cost of metal sheet =Rs.2820
Rate of cost=30/m²
Length of box=5 m
Breadth of box=4 m
Area of metal sheet
A=2(lb+bh+lh)
A=2(5×4+4h+5h)
A=2(20+9h)
A=40+18h
Cost of sheet= area of sheet × cost for 1m² of sheet
2820=(40+18h)×30
94=40+18h
18h=54
h=3
Therefore, The height is 3 m.
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