tha height of an eaulateral triangle is 3√3cm
find the perimetor
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1
We know that altitude bisects base side into two equal sides. Let the length of each side be 'a'. Therefore, the each side is 2cm. So, Perimeter = 2*3 = 6cm.
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6
Hey mate ,
(2a)^2 =( 3√3)^2 + a^2 { applying PGT }
4a^2 = 27 + a^2
3a^2 = 27
a^2 = 9
a=√9
a = 3 cm
Side = 2a = 6 cm
Perimeter of equilateral triangle = 3*side
= 3* 6
= 18 cm
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