Question

An equilateral triangle has sides 10 cm in length.

Calculate the perpendicular height of the
triangle. (to nearest mm)
Help please

Answer 1

86.6 mm

Explanation:

Finding the height of equilateral triangle:

side = 10 cm

`\sf \boxed{h = (√(3))/(2)*side}`

`\sf = (√(3))/(2)*10\\\\= 1.732 * 5\\\\= 8.66 \ cm`

= 8.66 * 10

= 86.6 mm