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Question

The area of a trapezium shaped field is 480 m2. The distance between two parallel sides is 15 m and one of the parallel side is 20 m. Find the other parallel side


  1. 64 m

  2. 20 m

  3. 44 m

  4. 24 m


Solution

The correct option is C

44 m


One of the parallel sides of the trapezium is a , which is of 20 m.

Let another parallel side be b,

Height h = 15 m.

The given area of trapezium = 480 m2.

Area of a trapezium =  12×h(a+b)

So, 480 =  12×15×(20+b)

Or,  960  = 15 × (20 + b)

      64 = 20 + b

Or, b = 44 m.

Hence, the unknown parallel side of the trapezium is 44 m.

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