a room is 7 m long 7 m wide and 3.5 m h. find the cost of covering it's wall by a paper of 50 cm wide at the rate of rs 1.50 per matre
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Step-by-step explanation:
V=L×W×H
7×7×3.5=171.5cm
Rate of one m=1.50
Rate of wallpaper
50cm=₹75
150cm=₹225
Remaining wall =171.5-150
=21.5cm
Rate of remain wall=21.5×1.50
=32.25
Total rate=225+32.25=₹257.25
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