Question

△ABC has vertices A(−6,5), B(−2,5), and C(−6,0).
What is the area of △ABC?
10 units2
9 units2
14 units2
20 units2

Answer 1

Answer:

The answer to your question is 20 units²

Step-by-step explanation:

Data

A (-6, 5)

B (-2, 5)

C (-6, 0)

Process

1.- Solve this problem using matrix

       |  -6   5|       Cross multiplication             Simplify                          Result

A =  | -2    5 |   = | -30 + 0 - 30 + 0 + 30 + 10 |   = | 40 - 60 |  = | -20 |  = 20 units²

       | -6    0|

       | -6    5|