A lawn is in the form of a rectangle whose sides are in the ratio 5 3 The area of the lawn is 3375 m...

Question

A lawn is in the form of a rectangle whose sides are in the ratio 5 3 The area of the lawn is 3375 m2 Find the cost of fencing the lawn at 65 per metre

Accepted Answer

Cost of fencing lawn 65 per metre Area of lawn 3375 m2 Length Breadth 5 3 Length 5x Breadth 3x We know Area of lawn Length x Breadth 3375 5x3x 3375 15x2 225 x2 or x 15 m Therefore Length 5x 5 x 15 75 m Breadth 3x 3 x 15 45 m Now Perimeter of lawn 2length breadth 275 45 2 x 120 240 Perimeter is 240 m Cost of Fencing 240 x 65 per meter Rs 15600

RS Aggarwal Solutions Class 10 Mathematics Solutions for Perimeter And Area Of Plane Figures Exercise 15B in Chapter 15 - Perimeter And Area Of Plane Figures