128
Question
The area of a triangular kite with perimeter 80 cm and sides in ratio 3 : 3 : 4 is
The area of a triangular kite with perimeter 80 cm and sides in ratio 3 : 3 : 4 is
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Solution
The correct option is B
Suppose that the sides are 3x, 3x and 4x, a=3x, b= 3x and c=4x.
Perimeter of the triangle (2S) = 80 cm ⇒ S=40 cm,
3x+3x+4x =80 cm (perimeter of the triangle)
⇒x = 8 cm
⇒ a=24 cm, b= 24 cm and c= 32 cm
Suppose that the sides are 3x, 3x and 4x, a=3x, b= 3x and c=4x.
Perimeter of the triangle (2S) = 80 cm ⇒ S=40 cm,
3x+3x+4x =80 cm (perimeter of the triangle)
⇒x = 8 cm
⇒ a=24 cm, b= 24 cm and c= 32 cm