Question

The perimeter of an equilateral triangle is 38 centimeters. Find the length of an

altitude of the triangle. Round to the nearest tenth.

Answer 1

11.0 cm

P=38 cm

38/3=12.67cm length of one side

Base of triangle = 12.67/2 =6.34 cm

Use formula
`a^2+b^2=c^2`

`6.34^2+x^2=12.67^2\\\\=11.0 cm`

x = altitude of triangle