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cate d the area of blue portn at5mx2m has 25 cm wide red bordet. The inner pert ot tpathdepet of ooutsideFind the area of blue portion. What is the ratio of te ateas di blue in colour. Findmer part of the careon to blue portion? (.70at is the raio of tne ateas ot teĂto blueporda of width 2.25 m is constructed all along outhe area of the verandah.n2ctangular park of length 0 m and breadth 45 m and parallel to its sides Fadside a room which is 55mong and 4 m wide. Findt of cementing the floor of the verandah at the rate of 200 per tikroads, each of width 5 m, run at right angles through the cente ofaarea of the roads. Also find the cost of construcing te rods at he re105 per m2.oni% |
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Answer» Given, Length of room = 5.5m, Width of room = 4m, Width of verandah which is constructed all along outside of room = 2.25m, Cost of cementing of verandha = Rs 200 per m2 Therefore, Length of room with verandah=5.5m+2.25m+2.25m=10m Width of room with verandah=4m+2.25m+2.25m=8.5m Area of room = Length×width=5.5×4=22.0m2 Area of room with verandah = Length×Width=10×8.5=85m2 Area of verandah = Area of room with verandah — Area of room = 85m2—22m2= 63 m2 Cost of cementing of verandah = Area × RateRs.200×63=Rs.12600 |
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