math
posted by fishycakes .
Rectangle A
Find the length of the diagonal of the rectangle A
Cordinates (1,5) (1,2) (5,2) (5,5)
i got the equation d= √(15)^2+(25)^2
and came up wtih the answer of 15, but the answer key is 3√5
The calculator is never wrong SO IM WRONG help please :( i'm desperate because i'm pretty sure i've done this right!!! Thank you! :)
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