A.
Lets find the total area of the rectangular building
A(building)=l*w where l=length and w=width
A(building)=22*26
A(building)=572m²
Answer=572m²
B.
Now lets find the area of the pool
A(pool)=l*w where l=length and w=width
A(pool)=16*20
A(pool)=320m²
To find out the area of the walkway. Subtract the area of the pool from the area of the building
A(building)-A(pool)=A(walkway)
572m²-320m²=252m²
A(walkway)=252m²
Answer= 252m²