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Sherlock4444444
@Sherlock4444444
August 2021
2
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the measures of a cuboid room are 12m*8m*4m respectively. find the total cost of whitewashing all four walls of room.if the cost is rupees 5 per m sq
Answers & Comments
rohitkumargupta
Internal Length (l), breadth (b) and height (h) of the cuboidal room are 12 m, 8 m and 4 m respectively.
The area of the surface on which white washing is done
= Area of the surfaces of four walls
= 2h (l + b) +
= 2 × 4 m × (12 m + 8 m)
= 160 m2
Cost of white washing per sq m = Rs 5.
Thus, the cost white washing the entire room = Rs (160 × 5) = Rs 800
Hope! This will help you.
2 votes
Thanks 10
AlinaKovapi
It has been given that ,
Length of the room ( l )= 12 m
Its breadth( b ) =8m
And its height( h )=4m
As we know ,
Area of four walls = 2(l+b)h
=2(12+8)*4
=2*20*4
=160 m sq.
Now,
Cost of whitewashing 1 m sq.= Rs. 5
So , cost of whitewashing 160 m sq = Rs. 5*160
= Rs.800
So, Rs. 800 will be the cost of whitewashing all the four walls of that room .
0 votes
Thanks 1
rohitkumargupta
hey dear your answer is wrong
AlinaKovapi
how??
rohitkumargupta
u not added the selling
rohitkumargupta
selling
AlinaKovapi
Just check out d que once again
AlinaKovapi
It has only been asked to find out d cost of whitewashing four walls ....not the whole room
rohitkumargupta
ok
AlinaKovapi
Thanks
Sherlock4444444
thanks once again @alina
AlinaKovapi
ur welcome
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Answers & Comments
The area of the surface on which white washing is done
= Area of the surfaces of four walls
= 2h (l + b) +
= 2 × 4 m × (12 m + 8 m)
= 160 m2
Cost of white washing per sq m = Rs 5.
Thus, the cost white washing the entire room = Rs (160 × 5) = Rs 800
Hope! This will help you.
Length of the room ( l )= 12 m
Its breadth( b ) =8m
And its height( h )=4m
As we know ,
Area of four walls = 2(l+b)h
=2(12+8)*4
=2*20*4
=160 m sq.
Now,
Cost of whitewashing 1 m sq.= Rs. 5
So , cost of whitewashing 160 m sq = Rs. 5*160
= Rs.800
So, Rs. 800 will be the cost of whitewashing all the four walls of that room .