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Question

The hypotenuse of a grassy land in the shape of a right triangle is 1 metre more than twice the shortest side. If the third side is 7 metres more than the shortest side, find the sides of the grassy land.

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Solution

Let the length of the shortest side be x metres.
Then,
Hypotenuse = (2x+1) metres
Third side = (x+7) metres
By pythagoras theorem,
(2x+1)2=x2+(x+7)2
4x2+4x+1=2x2+14x+49
2x210x48=0
x25x24=0
(x8)(x+3)=0
x=8,3
x=8 [x3]
Hence, the lengths of the sides of the grassy land are 8 metres, 17 metres and 15 metres.

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