Senior012
A suitcase measures 20 in. long and 15 in. high. What is the diagonal length of the suitcase?
A)25
B)62
C)12.8
D)29



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goformit100
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dw:1339824544160:dw

Senior012
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WHATS THAT ?

Senior012
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CAN YOU SHOW ME THE FORMULA ?

King
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dw:1339824727133:dw
first find this line then find the other one...

Senior012
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THATS NOT HELPING ME. IDK WHAT THAT IS. I NEED THE FORMULA FOR WHAT YOUR TYRING TO EXPLAIN.

King
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its pythagoras theorem

Senior012
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WHATS THE THEOREM ?

King
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'The sum of the squares of two sides is equal to the square of the third side.'
a^2+b^2=c^2
where a,b<c

UnkleRhaukus
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when you have a right angled triangle and c is the hypotenuse \[a^2+b^2=c^2\]dw:1339825048171:dw
hence\[10^2+15^2=d^2\]

Senior012
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OK WELL I DID (10 SQ + 15 SQ = D SQ) & GOT 325 WHICH IS NOT AN OPTION I HAVE . NOTHING IS MAKING SENSE TO ME ):

goformit100
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@seashell

seashell
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wat

goformit100
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IS THIS CORRECT

King
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its not 10^2+15^2
do 15^2+20^2 then root it..then do that squared +20^2 and root it fr answer....

goformit100
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dw:1339825763507:dw

King
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oh sry just do 15^2+20^2 and root fr answer
its sqrt(225+400)
sqrt(625)
25

UnkleRhaukus
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that diagram is incorrect read the question again

goformit100
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WHICH ONE IS INCORRECT

UnkleRhaukus
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the 3d diagrams

goformit100
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WHOSE MINE OR HIS

King
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@UnkleRhaukus ure diagram is rite but instead of sayin 15^2+20^2 u said 10^2+15^2

King
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both of ours

UnkleRhaukus
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ok i made a typo there
\[15^2+20^2=d^2\]

goformit100
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@UNCLE IS CORRECT

Senior012
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SO I DO 15(15)+20(20) ?

UnkleRhaukus
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yes, and then take the square root to find d

goformit100
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thanks @UnkleRhaukus

Senior012
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THE SQUARE ROOT OF MY ANSWER ?

King
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yeah the square root of the sum of 15^2+20^2

Senior012
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IS MY FINAL ANSWER 25? (:

King
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got it? @Senior012

UnkleRhaukus
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YES!

King
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yeah!!super!!:D

Senior012
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THANK YOU SO MUCH EVERYONE (: !!