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Question

Find the area of an equilateral triangle whose side, a=2+3 units.

[Hint: Area of an equilateral triangle =
(3)4(side)2]

A
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> 2×3 sq. units
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B
32(7+43) sq. units
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C
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> 73+124 sq. units
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D
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> 34 sq. units
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Solution

The correct option is C <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> 73+124 sq. units
Area of an equilateral triangle = (3)4 × <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> (side)2

= (3)4(2+3)2

= (3)4(4+3+43)

=(3)4(7+43)

=73+124 sq. units
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}-->

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