Respuesta :

Answer:

0.5a√(a^2 - (0.5a)^2).

Step-by-step explanation:

The height of the triangle  is √(a^2 - (0.5a)^2) units (By The Pythagoras Theorem) and the base is a units long.

The area = 0.5 * base * height

 = 0.5a√(a^2 - (0.5a)^2).

nanidesuka

Answer:

a^2 √3/4

Step-by-step explanation:

its a^2√3 divided by 4

good job