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Question

A wire when bent in the form of a square encloses an area = 576 cm2. Find the largest area enclosed by the same wire when bent to form an equilateral triangle.

A
3663 cm2
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B
3263 cm2
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C
2563 cm2
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D
2973 cm2
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Solution

The correct option is C 2563 cm2
Given,A wire when bent in the form of a square encloses an area of 576 sq. m .
Area of Square=(side)2
or, 576 =(side)2
or, side =576=24cm
Perimeter of square= 4 × side
= 4 × 24
= 96 cm.
When same wire is formed into equilateral triangle,then perimeter of square is equals to perimeter of triangle.
Perimeter of equilateral triangle= 96 cm
or, 3× side = 96 cm
or, side = 963= 32 cm.
Area of equilateral triangle thus formed =3×(side)24
=3×3224
=2563cm2

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