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Prstats Coaching Centre!, wat BS aera (Asst Teacher, Mathematics), sarcdor Saat (Asst Teacher , Gold Medalist,Mathematics, Class: VI 9051161488 & 8777673771 February 2014, , Mathematics — Perimeter and Area, , , , 1. The length and breadth of a rectangular piece of land are in the ratio 5:2. If the total cost, of fencing it at Rs. 12.5 per meter is Rs. 25000, find its length and breadth., , 2. Find the area of a path 2m wide laid inside along the boundary of a rectangular park of, dimension 100m X 60 m. Find the cost of gravelling it at the rate of Rs. 30 per square, metre., , 3. Find the area of a walking 1 m in width laid outside on all sides of a lawn of length 70 m, and breadth 50 m., , 4. A square garden has an area of 2500 sq.m. A part of uniform width of 2.5m runs around it, on the inside. Find the cost of laying it at Rs. 25 per sq.m., , 5. The perimeter of a right triangle is 30cm. Its hypotenuse is 13 cm and base is 5cm. Find, the area of the triangle., , 6. The area of a right triangle is 100cm’. If one of the perpendicular legs is 25 cm, find the, length of the other., , A, 7. In A ABC, AC=25cm, BC=7cm, AE=10cm., find (i) the area of A ABC, (ii) DB E c, , B, , 8. Find the area of an isosceles triangle whose perimeter is 32cm and its base is 12cm., , 9. The two sides of the parallelogram ABCD are 12cm and 8cm. The height corresponding to, base CD is 6cm. Find (i) the area of the parallelogram, , (ii) the height corresponding to base AD., , 10. Area of a parallelogram is 450cm? and its altitude is 20cm. Find the length of the, corresponding side of the parallelogram., , 11.The area of a parallelogram and a square are the same. If the perimeter of the square is, 160m and the height of the parallelogram is 20m, find the length of the corresponding, base of the parallelogram., , 12.A field in the form of a parallelogram has one of its diagonals 42m long and the, perpendicular distance of this diagonal from either of the outlying vertices is 80 cm. Find, the area of the field.