Question

Hey mate
plss solve my questions...
solve questionsss.

Answer 1

Solution;...✍️
Question no. 25
Volume of cuboid= lbh {cubic unit}

So, given volume of the godown=
(50×30×20)m^3

= 30000m^3


Now, cuboidal box can stored each = 0.3m^3

So, no. of boxes which can stored= 30000m^3/0.3m^3

= 100000 boxes. Answer✓✓
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Ques. No. 26
A cuboidal tank contain= 60000Litres
Given, Length= 10m, breadth= 3m

And let height be d m

Capacity of tank= 60000litres

Volume of Cuboid= 6000litres

So, lbh= 60000litres
= 10m×3m×dm= 60000litres

= 30d m^3= 60000×1/1000m^3{1m^3= 1000litres, 1litres = 1/1000m^3}

= 30dm^3= 60m^3
= d= 60÷30
= depth= 2m answer✓✓
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Ques.27-
Given, A rectangular plot of length and breadth = 60m and 34m
Let height be x.

And volume of the mud pit = 510m^3

Now, Volume of cuboid= lbh{cubic unit}

= 60m×34m×xm= 510m^3

= 2040xm^3=510m^3

= x= 510m^3/2040m^2

= x= 0.25m height answer.✓✓✓
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Ques.28_
Given,
Length= 4m
breadth=2m
Height= 7m

Now, Volume of Cuboidal pit= lbh
= 4m×2m×7m= 56m^3

Cost of digging 1m^3= Rs.45

Cost of Digging 56m^3= (56×45)Rs.

= Rs. 2520 answer✓✓✓✓
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Question No.31
Given,
Length= 15m
Breadth=7m
Height= 8m

Now, Surface area of Cuboidal tiffin box =
2(lb+bh+lh)sq. unit

= 2(15m×7m+7m×8m+15m×8m)Sq. unit

= 2(105m^2+56m^2+120m^2)Sq.unit

=2(281)m^2

= 562m^2 Answer.✓✓✓✓
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Question no.30
The capacity of tank is 5m×4m×6m= 120m^3
]6m Is the height of water tank}

[We know that 1m^3= 1000litres and 1l=0.001m^3]

So, 2000litres= 2m^3

Now, Find the water of the height_

Volume= lbh
=2m^3= 5m×4m×h

=2m^3= 20m^2h

= h= 20m^2/2m^3

= h= 10m Answer.✓✓✓