00:01
A given question, we have given a triangular piece of land i am showing with the help of a diagram.
00:06
So in this triangle we have three sides that is side a, side b and side c.
00:12
The length of the three sides are given as this a 1380 feet, b 1840 feet and c 2 ,450 feet.
00:20
Okay, we are asked to find what is the cost of this land if the cost of the land is 2 ,200 per acre.
00:29
So to find the cost of this length, first we should find the area of this triangle.
00:33
When three sides like this are given, the area of the triangle area, a equal to root over s into s minus a into s minus b into s minus c.
00:45
This is also known as heron's formula.
00:50
With the help of this formula, when length of three sides are given, we use this, where s c equal to a plus b plus c by two, half of the perimeter.
00:59
So in this question we can get a right as a plus b plus e 1380 plus 1840 plus 2450.
01:10
Okay...