SOLUTION: a rectangle length is 40cm and its diagonals is 41 cm.then what its area?

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Question 626430: a rectangle length is 40cm and its diagonals is 41 cm.then what its area?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, Re: TY, Please repost with more detail.  Thanks.

a rectangle length is 40cm and its diagonals is 41 cm. w = sqrt%2841%5E2-40%5E2%29+=+9cm

A%5BT%5D+=+40cm%2A9cm+=+360cm%5E2