Question

7. Find the area of an equilateral triangle whose perimeter is 18cm.

Answer 1

hey!!!

here is u r answer..

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given perimeter =18 cm.

in equilateral triangle all side are equal.

we know that sum of all side of object is known as perimeter.

side =18/3=

==>6 cm.

area of equilateral triangle=>>

√3/4× (side)2.

√3/4× (6)2.


=>>the value of √3 is 1.732.

1.732 /4× (6)2

1.732×9=15.588cm2.

ok