Multiple choice

The breadth of a rectangular field is 4/5th of its length. If the perimeter of the field is 270 m, then what is 50% of the area of the field?

  1. 4500 m2

  2. 2500 m2

  3. 2250 m2

  4. 3500 m2

  5. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Let length = x metres, then breadth = 4x/5 metres.

Perimeter = 270 metres

=> 2[x + 4x/5] = 270

=> x = 75 m

Length = 75 m and breadth = 4/5*250 = 60 m

Area = 75*60 = 4500 m2,

50% of area = 4500*50/100 = 2250 m2

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