1.

Find the sides of a rectangle whose perimeter is 100 metres and area 600 sq. metres.

Answer»

Perimeter = 100 m .

Length + Breadth = 50 m.

Length = 25 + x.

Breadth = 25 – x

Area = (25 + x)(25 – x) = 600

252 – x2 = 600

x2 = 625 – 600 = 25, x = 5

Sides, 25 + 5 = 30 m

25 – 5 = 20 m



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