b*h for triangle
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The surface area of a prism is calculated by adding the area of the walls to the area of the top and bottom. The area of the walls is calculated by multiplying the perimeter of the top by the height of the wall.
That depends on the area to be calculated and some examples are:- Area of a circle = pi*radius2 Area of a triangle = 0.5*base*height Area of a rectangle = base*height
The area of a triangle can be calculated with one main formula. That is, A=(b*h)/2, where A is the area of the triangle, b is the base of the triangle, and h is the height of the triangle.
The area of a circle with a known radius can calculated using the following formula where r is the radius : A = Pi(r)2
The area of a circle can be calculated using the formula pi*(radius^2). So in this case, the area of the circle will be pi*(1^2), which is equal to pi.