RD Sharma - Mathematics

Book: RD Sharma - Mathematics

Chapter: 20. Mensuration-I (Area of a Trapezium and a Polygon)

Subject: Maths - Class 8th

Q. No. 17 of Exercise 20.1

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The cost of fencing a square field at 60 paise per metre is Rs. 1200. Find the cost of reaping the field at the rate of 50 paise per 100 sq. metres.

Perimeter of square field =

Perimeter of square field =

Perimeter of square = 4 × side

Side of square =

Area of square = side2

Area of square = 500 × 500 = 250000 m2

Cost of reaping =

Cost of reaping is Rs

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