Area of triangle = 0.5*base*height = 0.5*7.5*6 = 22.5 square units.
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To find the area of a triangle find the base and the height of the triangle. Then multiply the base by the height, then divide by 2. To find the perimiter of a triangle add together the outside edge of the triangle. To find the area of a triangle find the base and the height of the triangle. Then multiply the base by the height, then divide by 2. To find the perimiter of a triangle add together the outside edge of the triangle.
Area = 0.5*Base*Height
Area = 1/2 * base * height.
Divide the area by height then you get the base.
area of a triangle = 1/2 base x height ie times the area by two then divide by the base = height