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Question

What is the area of an equilateral triangle whose side is 8 cm?


A

163 cm2

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B

16 cm2

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C

3 cm2

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D

32 cm2

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Solution

The correct option is A

163 cm2


Semi perimeter of a triangle (s) = a+b+c2
8+8+82=12cm
Area of a triangle = s(sa)(sb)(sc)
=12(128)(128)(128)
=12×4×4×4
=3×4×4×4×4
= 163 cm2

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