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What is the length of the diagonal if a 10 cm by 15cm rectangle ?
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1 vote
What is the length of the diagonal if a 10 cm by 15cm rectangle ?

User Brian Cowan
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2 Answers

6 votes
20 cm i think
I am not sure but my thinking is
The rectangle becomes 2 30 60 90 triangles and 10 would be the short side making it 20 because the short side is a and the hypotenuse is 2s.
User Undefinedtoken
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3 votes
In other words, if a rectangle is 10 cm by 15 cm, what is the length of the diagonal?  Use the Pythagorean Theorem.  a^2+b^2=c^2, where c is the measure of the hypotenuse.
User Kfb
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6.5k points
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