Question 549418: a rectangle has sides with a length of 5cm and 12 cm. what is the length of the digaonal of the rectangle Answer by oberobic(2304) (Show Source):
You can put this solution on YOUR website! A rectangle has 4 90-degree angles, so you can apply the Pythagorean Theorem to find the diagonal.
c^2 = a^2 + b^2
a = 5 cm
b = 12 cm
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c^2 = 25 + 144 = 169 cm^2
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c = sqrt (169) = + or - 13 cm
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A negative diagonal is spurious, so we can say:
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Diagonal = 13 cm.
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Done.
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