the length and breadth of a hall are in the ratio 4:3 and its height is 5.5m. the cost of decorating its wall including doors and windows at Rs. 6.60 per sq.m is Rs.5082. find the length and the breadth of the room.
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Answer:
40 m and 30 m
Step-by-step explanation:
Let the length of the room be 4x
And breadth be 3x
Total area to be decorated=2(length+breadth)xheight
=2(7x)x5.5=77x
Cost of decorating 1st. M. Area=rs. 6. 6
Total area =5082/6. 6=770Sq. M.
A. T. Q.
77x=770
X=10
Length=4x=40
Breadth=3x=30
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