The area is 31.5 units squared
Answer:
3 ft
Step-by-step explanation:
We can use a ratio to solve
Using x as the length of the model
1 x
----- = -----------------
12 36 ft
Using cross products
1 * 36 = 12x
Divide each side by 12
36/12 = 12x/12
3 =x
Make two shapes out of it.
The bottom is a rectangle 14 x 5 = 70 square cm
The top is a triangle 1/2 x 12 x 5 = 30 square cm
Total area = 70 + 30 = 100 square cm