# CALCULUS

posted by .

A triangle has verticies A(-2.1,3), B(7,8,-4), and C(5,0,2). Determine the area of triangle ABC.

• CALCULUS -

This is actually a question from co-ordinate geometry. If (x1,y1), (x2,y2) and (x3,y3) are the vertices of a triangle then its area = (1/2))(x1(y2-y3)+x2(y3-y1)+x3(y1-y2))
The co-ordinates of the vertices aren't very clear in your Q but assuming that the three points are (-2.1,3),(7.8,-4)& (5,0.2) the area of the triangle is 10.99 sq. units
Ajit

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### 9th grade

given that a(-1,8) ,b(2,4) and if the line y=4 is the axis of symmetry of triangle abc find c.show that triangle abc is an isosceles triangle,calculate the area of triangle abc,calculate the perpendicular distance from a to bc
2. ### math

Let P and Q be the points on the sides AB and BC of a triangle ABC respectively such that BP = 3PA and QC = 2BQ. Let K be the midpoint of the segment PQ. Prove that the area of the triangle AKC is equal to 11S/24, where S is the area …
3. ### HELP!!!!RIGHT NOW!!!!

Which set of side lengths shows similar triangles?
4. ### Math

Which set of side lengths shows similar triangles?
5. ### math

B . . . . . . . . . . . . . . C A Triangle ABC is right angled at A. The area of triangle is = ½bh. The area of the triangle is 3/2x^2 + 10x + 16cm^2 where x is a positive integer. The area of the triangle ABC can be written in the …
6. ### Geometry

Let ABC be any triangle. Equilateral triangles BCX, ACY, and BAZ are constructed such that none of these triangles overlaps triangle ABC. a) Draw a triangle ABC and then sketch the remainder of the figure. It will help if (triangle) …
7. ### sanket study centre

In triangle ABC p,q,r such that they lie interior of triang ABC and AP=AR and all the three sides of triangle PQR are scalan if area of triangle PQR is 100 then find area of triangle ABC
8. ### maths

AD is the median of triangle ABC and G divides AD in the ratio 2:1 .Prove that area (triangle AGB )= area (triangle BGC )=area (triangle AGC )=1Ã·3area (triangle ABC )
9. ### maths

DRAW LOCUS OF POINT SO THAT IT IS EQUIDISTANT FROM BC & CA . ... constructed such that none of these triangles overlaps triangle ABC. a) Draw a triangle ABC and then sketch ... 16) AB = 3.2cm BC = 8.4cm The area of the triangle ABC …
10. ### math

In isosceles right triangle ABC, point D is on hypotenuse BC such that AD is an altitude of triangle ABC and DC = 5. What is the area of triangle ABC?

More Similar Questions