Question

There is a rectangular paper, whose length and breadth are in the ratio 5:2, respectively and it has a perimeter of 70 metres. If a triangular piece with height of 9 metres and base of 14 metres is cut out from the given paper then find the area (in m2) of the remaining paper.

Q: Answer-There is a rectangular paper, whose length and breadth are in the ratio 5:2, respectively and it has...

Let the length and breadth of the rectangular be 5x metres and 2x metres, respectively Then, perimeter of the paper 2 length breadth 2 5x 2x 14 x metres So, 14x 70 So, x 7014 5 So, area of the entire paper length breadth 5 5 2 5 25 10 250 m2 Area of the triangular piece 12 base height 12 9 14 63 m2 So, area of the remaining paper 250 63 187 m2