Question

The height of an equilateral triangle is 9 cm. find its area.​

Answer 1

Answer:

$40.5cm^{2}$

Step-by-step explanation:

area of triangle=?

height=9cm

since it is an equilateral triangle, the length of the base is equal to the length of the height

∴the base=9cm

area of triangle=$\frac{1}{2}$×base×height

area=$\frac{1}{2}$×9×9

area=$\frac{1}{2}$×81

area=$40.5cm^{2}$