Answer:
the formula for a rectangular prism is length* Height* Width
Step-by-step explanation:
Given:
ABCD is a quadrilateral
AC = 12, DE = 4 and FB = 5
To find:
The area of the polygon.
Solution:
AC bisects the quadrilateral into two triangles.
Area of triangle:

<u>Area of triangle DAC:</u>



Area of triangle DAC = 24 square units.
<u>Area of triangle BAC:</u>



Area of triangle BAC = 30 square units.
Area of polygon = Area of triangle DAC + Area of triangle BAC
= 24 square units + 30 square units
= 54 square units
The area of the polygon is 54 square units.
I think very well that it is A or B. With my experience, but you might want to keep doing research.
Answer:
-9
Step-by-step explanation:
Both of the numbers are negative and adding them will give you -9.