Answer:
c = 5
Explanation:
b^2 is a 4x4 square and so we know that the side of "b" is 4. a^2 is a 3x3 square so we know that side "a" is 3. Now, we can use the Pythagorean theory and do 4^2+3^2=c^2 and get c = 5. Or we could just count the squares and see that there are 5 squares on side "c".