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ocagonai Shace10. There is a pentagonal shaped park as shown in the figureFor finding its area Jyoti and Kavita divided it in two different ways30 m151 515 mJoyti's diagramKavita's diagramH15 m |
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Answer» Jyoti has divided the park into congruent trapeziums. The parallel sides of the trapezium are measuring 15 metres and 30 metres and the perpendicular distance is 7.5 metres Area of Trapezium = 1/2 × Sum of parallel sides × Perpendicular distance So, Area of two trapeziums = (30 + 15) × 7.5 = 337.5 sq m Kavita divided the park into upper triangular portion and a lower rectangular portion. Sides of the rectangle are 15 metres each. Base and height of the triangle are 15 metres each. Area of square = 15 × 15 = 225Area of triangle = 1/2 × 15 × 15 = 112/5Total Area = 225 + 112.5 = 337.5 sq cm |
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