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2015-03-02T22:44:10+05:30

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L = 30m
b = 9m
h = 4m

Surface area of wall (LSA)= 2(lh+bh)
                                      = 2(30×4 + 9×4)
                                      = 2(120 + 36)
                                      = 2×156
                                      = 312 m²
Area of bottom = l×b = 30×9 = 270m²
total area = 312+270 = 582m²

Rate of plastering = 25p/m² = Rs. 0.25
cost = 0.25×582 = Rs. 145.50
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  • Brainly User
2015-03-03T00:48:30+05:30
L=30m; b=9m h=4m Surface area of wall=2(lh+bh) 2(30×4+9×4)=312 Area of floor=l×b=30×9=270 Total area= 312+270=582 Cost=582×.25=145.5rs
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