Check my answers i think the special right triangle 30 -60 -90 would be used. for the height of the triangle i had got 10√3 cm. for the area i got 50√3 cm. the image of the question is down below, !

THE HEIGHT
To find the height, use trigonometry ratio (tan) of 60°
= tan α

plug in the numbers
= tan 60°
= √3
move 10 to the right side
height = 10√3

The height is 10√3 cm

THE AREA
To determine the area of a triangle, use the following formula

b stands for the base, h stands for the height

plug in the numbers
a = 1/2 × b × h
a = 1/2 × 10 × 10√3
a = 5 × 10√3
a = 50√3

The area is 50√3 cm²

Ithink the answer is c just trying to others

The answer would be a