Question

What is the area of rectangle A (0,-1) B(0,4) C(4,4) D(0.-1)

Answer 1

20 square units

Explanation:

Point D should be D(4, -1) if a rectangle is to be formed. A picture is attached to this answer.

The rectangle's dimensions are 4 by 5, so it's area is 4 x 5 = 20 square units. The picture is small enough that you could even just count squares inside the rectangle!