Question

Each side of an equilateral triangle measures 30cm. How do you determine the altitude of the triangle?

Answer 1

the average weight of 8 persons is increased by 2.5 kg, when one of them is replaced by a new man with weight 76 kg. weight of the man which was replced by new one was

Answer 2

Answer:

25.98cm

Step-by-step explanation:

Altitude is the length of the perpendicular that falls from any vertex to the opposite forming a right angle obviously.

For am equilateral triangle, the altitude(perpendicular) always passes through the midpoint of the opposite side, that is it starts from any vertex and falls at 15cm mark of the side.

Now it forms a Right triangle, having hypotenuse as 30cm and say base as 15cm. Now by using Pythagoras theorem for right triangle,

Hypotenuse ²= base² + perpendicular ²