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Question

A wire when bent in the form of a square encloses an area of 484 m2. Find the largest area enclosed by the same wire when bent to form an equilateral triangle.

A
37258 sq. m
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B
33717 sq. m
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C
46213 sq. m
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D
27413 sq. m
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Solution

The correct option is B 37258 sq. m
Given,A wire when bent in the form of a square encloses an area of 484 sq. m .
Area of Square=(side)2
or, 484 =(side)2
or, side =484=22cm
Perimeter of square= 4 × side
= 4 × 22
= 88 cm.
When same wire is formed into equilateral triangle,then perimeter of square is equals to perimeter of triangle.
Perimeter of equilateral triangle= 88 cm
or, 3× side = 88 cm
or, side = 883cm.
Area of equilateral triangle thus formed =3×(side)24
=3×(883)24
=372.58cm2

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