Question

How to calculate the area of a triangle ​

Answer 1

Answer:

by using this formula

area=1/2*base*height

Answer 2

How to calculate area of triangle?

There are many ways of finding area of a Triangle.

So, I am going to discuss three ways to find the area of triangle.

Way 1: Finding area by using height and base

This is the most common and most easiest way of finding the area of Triangle.

In this, we have to multiply the perpendicular with base. And after that we have to divide them by 2

Mathematical Representation: $\boxed{\tt \dfrac{h \times b}{2}}$

where 'h' is perpendicular or height and 'b' is base

Way 2: Finding area by Heron's Formula

In this way, we first find the semi-perimeter of the triangle and then we.

And then apply this formula

$\tt \sqrt{s(s-a)(s-b)(s-c)}$

Where s is semi-perimeter and a,b and c are the sides of triangle

And formula of s is $\boxed{\tt s = \dfrac{a+b+c}{2}}$

Way 3: Finding area by using Coordinates

The formula is $\boxed{\tt\dfrac{1}{2}|x_1(y_2-y_3)+x_2(y_3-y_1)+x_3(y_1-y_2)|}$

Where $\tt (x_1,y_1) , \ (x_2,y_2), \ (x_3,y_3)$ are the coordinates of the triangle.