Question

ABC is an equilateral triangle with each side 10 units . Find the length of its altitude​

Answer 1

Answer:

5$\sqrt{3}$

Step-by-step explanation:

Draw a perpendicular

it makes right angle in the base

so by pythagoras theorm

a² + b² = c²

a² = 10² - 5²

a² = 100-15

a² = 75

a = $\sqrt{75}$

a= 5$\sqrt{3}$

Answer 2

Step-by-step explanation:

given:-ABC is a equilateral triangle

sides=10 units

area of equilateral triangle= √3 a^2

4

= √3×10×10

4

after cutting

= √3 ×5×5

= 10√3units