Question

The area of a triangle with vertex (3,0)(7,0) and (8,4) is

Answer 1

Answer:

We use the formula

1/2 [x1 (y2 - y3) + x2 (y3 - y1)+ x3(y1- y2)]

putting the values:

1/2 × [3(-4) +7(4) + 8(0)]

1/2 × [-12 + 28]

1/2 × [16]

= 8 square m

Answer 2

Answer:

to find the area of a triangle

Step-by-step explanation:

the formula is 1/2[x1{y2-y3}+x2{y3-y1}+x3{y1-y2}]

1/2[12+28+0]

1/2*2[6+14]

1[20]

20

so the area of this triangle is 20 sq cm 2