Answer:
The answer to your question is 684 ft²
Step-by-step explanation:
Data
Rectangle Triangle 1 Triangle 2
base = 20 ft base = 20 ft base = 18 ft
height = 18 ft height = 9 ft height = 8 ft
Process
1.- Calculate the area of the rectangle
Formula
Area = base x height
Substitution
Area = 20 x 18
Result
Area = 360 ft²
2.- Calculate the area of the triangle 1
Formula
Area = base x height / 2
Substitution
Area = 20 x 9 / 2
-Result
Area = 90 ft² x 2 = 180 ft²
3.- Calculate the area of the triangles 2
Substitution
Area = 18 x 8 / 2
Result
Area = 72 ft² x 2 = 144 ft²
4.- Calculate the area of the pyramid
Total area = 360 + 180 + 144
= 684 ft²
