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This is what I did, but it's wrong.
|dw:1354247106626:dw|

|dw:1354247301693:dw|

you just forgot the pi and it increased by for not multiplied by 4 so you only add 4

|dw:1354247411483:dw|

so you squarroot everything and get r+4=10

am i supposed to divide it all?

yeah beacuse you have to do the same thing on each side like you subrtract numbers from each side

but if i divide everything, wouldn't everything cancel out besides 100?

nevermind i understand now

thanks