The side of an equilateral triangle is 16 cm.Find the length of its altitude.

Explanation

Area of an equilateral triangle `A= sqrt3/4 **a^2`

Here, `a` is side of triangle.
`A = sqrt3/4**16**16 = 64sqrt3 cm^2->(1)`


Also, `A = 1/2**base**height `

Here, base` = a = 16 cm`

Let height or altitude of the triangle is `h` cm.

`:. 64sqrt3 = 1/2*16*h`

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