If the perimeter of an equilateral triangle is 36cm find it's area and height
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perimeter of equilateral triangle is 3a
3a =36
a = 36/3
a= 12
Area of equilateral triangle is √3/4 a^2
= √3/4 *12^2
=√3/4 * 144
= √3*36=1.732*36=62.352 ~ 62.4sq.cm
height = √3/2*a
=√3/2*12
=√3*6
= 1.732*6
=10.392 ~ 10.4cm
3a =36
a = 36/3
a= 12
Area of equilateral triangle is √3/4 a^2
= √3/4 *12^2
=√3/4 * 144
= √3*36=1.732*36=62.352 ~ 62.4sq.cm
height = √3/2*a
=√3/2*12
=√3*6
= 1.732*6
=10.392 ~ 10.4cm
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