Answer:
1032
Explanation:
To find the area, multiple base•height.
To find the base and height of the middle square, subtract:
Base: 45-(20+10)=15
Height: 23-12=11
After that, take the divided shapes and multiply:
20•23=460
10•12=120
15•11=165
Then add your answers.
460+120+165=1032