Maths-
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Question

Find the area of a given triangle whose perimeter is equal to 26cm

  1. 20 sq cm
  2. 20.5 sq cm
  3. 21 sq cm
  4. 22 sq cm

The correct answer is: 20 sq cm


    Given:
    Perimeter= 26cm
    Height=10cm
    Hypotenuse=12cm
    Area=?
    Perimeter of triangle=sum of sides
    26=10+12+ b
    26=22+b
    26-22=b
    4cm=b
    Area=1/2*base*height
    =1\2 * 4*10= 20 sq. cm

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