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Find the cost of painting the four walls and thecelling of a room at the rate of RS 14 Per m²if perimeter of the base with equal sides is80m and height of the room is 9.5m. Also findthe volume. tell me the answer please it's urgent |
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Answer» Answer: Perimeter of a square shaped floor is = 80m → 4a=80 → a=20m Thus, Length (a) = 20 m Breadth (a) = 20 m Height (h)= 9.5 m COST : Area of FOUR walls and top 2(L+b)h+a² or 2(a+a)h+a² → 2(20+20)9.5+20² → 2(40)9.5+400 → 80 x 9.5 +400 → 760+400 → 1160m² Cost of PAINTING 1 m² = Rs. 14 Therefore, Cost of painting 1160m² = Rs. {1160×14} = Rs. 16240 VOLUME : Volume of room = l x b x h or a x a x h = 20 x 20 x 9.5 = 380m³ Hence, Cost of Painting = Rs. 16240 Volume of room = 380m³ |
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