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Question

Two plots of land have the same perimeter. One is a square of side 60 m, while the other is a rectangle whose breadth is 1.5 dam. Which plot has the greatest area and by how much?

A
Rectangle, 32 m2
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B
Rectangle, 36 m2
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C
Square, 32 m2
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D
Square, 36 m2
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Solution

The correct option is D Square, 36 m2
Length of the square =64 m

Length of the rectangle =70 m

Perimeter of the square =4×side=4×64=256 m

Let breadth of the rectangle =B

Perimeter of the rectangle =2(70+B)

Now, according to question,

2×(70+B)=256

140+2B=256

2B=256140

2B=116

B=58 m

Area of the rectangle =58×70=4060 sq. m

Area of the square = length × breadth =64×64=4096 sq.m

Square has more area by 36 sq. m.

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