The answer is
<span>(a−b)²+b²/a²
proof
if A is the area of the
</span><span>inner</span> squared, so A= c², and c²= (a−b)²+b²
so the side of the outer must be a-b +b=a, its area is a²
Photomath i use it for my math all the time it gives you the option for how you wanna solve it and shows you how to solve it
For 7: because of the decimal place in the 0.6 it's not a huge number and it's not possible to get a big number like 15000
For 8: because again a fraction dividing is not going to do much you can't get a big difference like the number 30.
Step-by-step explanation:
here it is.Hope it helps
