A square B1B2B3B4 is formed by joining the midpoints of the sides of a square A1A2A3A4. A third square C1C2C3C4 is made in the same way and the process is continued indefinitely.
If A1A2=10 cm, find the sum of the areas of all the squares so formed in cm2.
Your answer seems reasonable.
Find out if you're right!