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4. A class room is 7m long, 6.5m wide and 4m high. It has one door 3mX1.4m and 3 windows, eachmeasuring 2mX1m. The interior walls are to be colour washed. Find the cost of colour washing atthe rate of Rs 5.25 per sq. m(Rs 513.45) |
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Answer» Area of four walls=(2h(l+b))=(2x4(7+6.5))=(8x13. 5)=108m squarearea of one window =3mx1. 4m=4.2m squarearea of three window =3(2mx1m)=6m squaretotal area of windows =(4.2+6)m square=10.2m squareArea for whitewashing =(108-10.2)m square=97.8m square cost of 1 m square white washing = 5.25rupeecost of 97.8m square white washing=5.25x97.8=513.45 rupees please increase my followers... |
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