Find Area Of Triangle With 3 Sides

Enter side a side b and side c and click the button calculate the area of a triangle area of a triangle is displayed is calculated from the length of the three sides.

An equilateral triangle has three equal side lengths and three equal angle measurements so if you know the length of one side you know the length of all three sides. To calculate the area of an equilateral triangle you only need to have the side given. There are different starting measurements from which one can solve a triangle calculate the length of a side and height to it and finally calculate a triangle s area. Where a b and c are the lengths of the triangle s sides and s is the triangle s semiperimeter.

Find the length of one side of the triangle. Area of a triangle given 3 sides heron s calculator when a triangle is given with sides alone then heron s formula is the most appropriate to use. Use the calculator on below to calculate the area of a triangle given 3 sides using heron s formula. The first step is to find the semi perimeter of a triangle by adding all the three sides of a triangle and dividing it by 2.

Heron s formula includes two important steps. Area of a triangle the length of the three sides 3calculate the area of a triangle using the formula from the length of the sides. When you know the length of a triangle s three sides and you don t know an altitude you can use hero s formula to find the area. Area a 3 4.

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Having 3 sides might seem as if you do not have enough information to calculate the area but heron being an excellent greek engineer found a simple way of making an accurate calculation from knowing three sides alone. Although we didn t make a separate calculator for the equilateral triangle area you can quickly calculate it in this triangle area calculator. The area of a triangle with 3 sides of different measures can be found using heron s formula. For example you might have a triangle with three sides that are 6 cm long.

The area will be calculated.