Find the area of a composite shape below. Really confused on this one. can i get a step by step explanation please :) <3

Answer:
390 ft^2
Step-by-step explanation:
We will break this shape into two rectangles, one that is 7 ft wide by 30 ft long
and the other that is 25ft-7ft wide by 30ft -20 ft long (18 ft by 10 ft)
1st: 7 ft by 30 ft
A = l*w = 7*30 = 210 ft^2
2nd: 18 ft by 10 ft
A = l*w = 18 * 10 = 180 ft^2
Add the areas together
210+180 = 390 ft^2
Answer:
390 ft²
Step-by-step explanation:
25 - 7 = 18
(30×25) - (20×18)
= 390 ft²