Question

8. Find the length of altitude of an equilateral triangle of sides 20 cm each.​

Answer 1

Answer:

17.3 cm

Step-by-step explanation:

we can use Pythgoras theorem

let altitude be h

side given 20 cm

base will be half i.e. 10 cm

by applying Pythagoras theorem..

=> h² + 10² = 20²

=> h² = 300

=> h = √300

=> h = 17.3 cm