The area of an floorball ball.

Level pending

Paul got a homework to calculate the area of an floorball ball. And because he loves that sport he wanted to be accurate, so he counted all the holes, there were 26, and he measured the circumference, that was 226mm and the diameter of one hole was 11mm. He also added the area inside the ball. Paul was very talented in math so he got it right. What answer did he get(answer in dm).

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