Answer:
Area = 
Step-by-step explanation:
The area of the shaded region is equal to the total area of the full square minus the area of the non shaded region.
The area of a rectangle is its base times its high
So A=b*a.
For the full square, A1=
For the non shaded square, A2 = 
So the shaded area is A1-A2 = 
The sum of their age is "s" years? Please fix the typo. Then I might be able to help :D
Answer:3 & 4
Step-by-step explanation: those are the two with multiplication/division