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What is the area of an equilateral triangle that has a perimeter of 36 centimeters? Round to the nearest square centimeter.

Sagot :

anupkhatr12005

Answer:

(a is size of side of triangle)

the perimeter of equilateral triangle =3a

or, 36=3a

Thus, a = 13cm

area of equilateral triangle

=√3/4*(a^2 )

=√3/4*(13^2)

=73cm^2

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