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ss7ja [257]
4 years ago
9

James wants to draw a line diagonally across a rectangular piece of paper. If the paper measures 9 inches by 12 inches, what is

the minimum length of the straight-edge he needs to make the line?
Mathematics
2 answers:
Helga [31]4 years ago
8 0
The straight-edge would have to be 12.7279220614 inches
sineoko [7]4 years ago
3 0
If James draws a diagonal line of length x from one right angle to the opposite right angle, then he divides his piece of paper into two pieces, each of them is right triangle with legs 9 inches and 12 inches.
By Pythagorean theorem:
 x^2=9^2+12^2 \\ x^2=81+144 \\ x^2=225 \\ x=15 inches.
Answer: 15 inches


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