Question

The coordinate of CST element is x1=100, y1=100, x2=400, y2=100, x3=200, y3=400.Find the value of A​

Answer 1

Given :   Coordinates of elements  (100 , 100) , ( 400 , 100  ) , ( 200 , 400)

To Find  : Area

Solution:

Vertex of triangle are

(100 , 100) , ( 400 , 100  ) , ( 200 , 400)

Area = (1/2) |  100 ( 100 - 400)  + 400( 400 - 100)  + 200(100 - 100) |

= (1/2) | 100 (-300) + 400(300)  + 0 |

= (1/2) | 300(-100 + 400) |

= (1/2) | 300 (300) |

= (1/2) 90000

= 45000 sq units

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