84.87
It is double the length of the base, in square units.
Area = 0.5*base*altitude
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).
The answer is 32 cm. because the formula for the area of a triangle is 1/2*base*height. Since its an equilateral triangle, it has equal sides. so just substitute it to the given formula. It will be 1/2*8*8 so therefore its 32 :)
It is: 0.5*base*perpendicular height
Area = 1/2*base*perpendicular height.
The area of triangle is : 80.0
-- The area of any triangle is 1/2 (length of the base x height). -- For an equilateral triangle, that's equivalent to 1/2 x sqrt(3) x (length of a side).
Base times height and divided by 2.
The area of triangle is : 100.0
The base is one third of the perimeter, half of the base times the height is the area.
To get the area of an equilateral triangle, you just need to know the length of one side. Multiply the length of one side by the square root of three and then divide the product by four, and you will get the area of the triangle.