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Question

Find the area of an equilateral triangle whose side is 4 cm.

A

53 sq. cm

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B

9 sq cm

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C

43 sq. cm

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D

63 sq. cm

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Solution

The correct option is D 43 sq. cm

From question,

side length of the equilateral triangle =4 cm

We know that,

Area of an equilateral triangle = 34 × side2

=34×42

=34 × 16

=43 sq. cm

Hence, the area of the equilateral triangle is 43 sq. cm.


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