The length,breadth,and height of a hall are 7 | vedclass

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Question

(C) $1$. Calculate the area of the four walls: $Area = 2(l + b) 	imes h = 2(7 + 5) 	imes 4 = 2(12) 	imes 4 = 96\, m^2$.$2$. Calculate the area of t

Vedclass · Accepted Answer

$22200$

Vedclass · Answer

(C) $1$. Calculate the area of the four walls: $Area = 2(l + b) 	imes h = 2(7 + 5) 	imes 4 = 2(12) 	imes 4 = 96\, m^2$.$2$. Calculate the area of the ceiling: $Area = l 	imes b = 7 	imes 5 = 35\, m^2$.$3$. Total area to be whitewashed (excluding doors and windows): $Total\, Area = (Area\, of\, walls + Area\, of\, ceiling) - (Area\, of\, 2\, doors + Area\, of\, 4\, windows)$.$4$. $Area\, of\, 2\, doors = 2 	imes (3 	imes 2) = 12\, m^2$.$5$. $Area\, of\, 4\, windows = 4 	imes (2 	imes 1) = 8\, m^2$.$6$. $Total\, Area = (96 + 35) - (12 + 8) = 131 - 20 = 111\, m^2$.$7$. $Cost = Total\, Area 	imes Rate = 111 	imes 200 = ₹22,200$.

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