The area of any triangle is 1/2 of (length of the base) multiplied by (the height).
Perhaps you can handle it from there.
With a 30 deqree angle at the top of a triangle and a height of 15
6 (base) * 5 (height) / 2 = 15.
The height of the triangle is 6 meters
Comparing the areas: The larger triangle has an areas of 102 sq in the smaller 60 sq in.
area = base x height ÷ 2 ⇒ height = 2 x area ÷ base ⇒ height = 2 x 15 ÷ 3 = 10 inches.
An equilateral triangle with a height of 20 has a base of 23.1 (23.09401), not 15. If the base is 15 then the height will be 13 (12.99038).
Use the formula for the area of a triangle, which is 0.5 x base x height. Since the 10' and the 15' are at right angles, you can take any of them to be the "base", in which case the other one is the "height".
The area of a triangle is (1/2) x (length of the base) x (height of the triangle). You ought to be able to handle it from this point.
With a 30 deqree angle at the top of a triangle and a height of 15
area of any triangle is 1/2 x base x height.
6 (base) * 5 (height) / 2 = 15.
30 square inches. Area of triangle = (base x height) divided by 2.
(1/2)base*height = .5(10)(15) = 75
Base = 8, Height = 15
The area of triangle is : 135.0
The area of triangle is : 90.0
The area of triangle is : 82.5