Answer:
The total cost of adding wallpaper to the room is 487.20
10 is your answer
D they both are correct, because it is the reflection that are equal to each coordinate.
Step-by-step explanation:
Givens
B = 10
h = 12
Formula
Area = 1/2 * B * h
Solution
Substitute into the formula
Area = 1/2 * 10 * 12
Area = 60