A cuboidal room is of length 10m breadth 6m and height 3m.The four walls and the roof have to be painted.If the cost of painting is Rs20 per square meter find the total cost.
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Rupees 4720
Find total surface area by this formula 2(lb+bh+lh)
Find total surface area by this formula 2(lb+bh+lh)
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L =10m
B=6m
H= 3m
therefore. area of four walls is 2h(l+b)
SO, 2×3(10+6)=96m
+ L×B=10×6= 60
TOTAL AREA TO BE PAINTED =96+60=156m
COST OF PAINTING = 50×156= ₹7800
B=6m
H= 3m
therefore. area of four walls is 2h(l+b)
SO, 2×3(10+6)=96m
+ L×B=10×6= 60
TOTAL AREA TO BE PAINTED =96+60=156m
COST OF PAINTING = 50×156= ₹7800
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