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Question

The diagonal of a trapezium shaped field is 25m and the perpendiculars dropped on it from the remaining opposite vertices are 8m and 12m. Find the area of the field(in m2).


  1. 200

  2. 100

  3. 250

  4. 300


Solution

The correct option is C

250


We can calculate the area of this quadrilateral as the sum of the areas of two triangles taking diagonal length 25m as the base for both triangles and perpendicular length 8m as the height of one triangle and the perpendicular length 12m as the height of another triangle.

Area of triangle = 12×base×height

Area of the first triangle = 12×25×8

Area of the second triangle = 12×25×12

Area of quadrilateral = Area of the first triangle + Area of the second triangle

Area of quadrilateral = 12(25)(8+12)=250m2

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