Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Hi there! Have questions about your homework? At Brainly, there are 60 million students who want to help each other learn. Questions are usually answered in less than 10 minutes. Try it for yourself by posting a question! :D

Length and breadth of a hall are in the ratio 4:3 and its height is 550 cm. the cost of decorating its wall [ including doors and windows] at Rs 6.60 per

square metres is Rs 5082. find the length and breadth of room.

Let length be 4x cm and breadth be 3x cm height=550cm rate of decorating wall= Rs 6.60/m² total cost of decorating wall= Rs 5082 total cost= area to be decorated × rate 5082=2(lh+bh)×6.6 5082×10=2×550×(4x+3x)×66/100 231×100=2×55×7x×3 21×100=2×5×21x 10=x ∴length =4×10=40m breadth=3×10=30m