Pythagorean theorem word problems: diagonals of rectangles
Draw the right triangle, decide which side is the hypotenuse, and use the Pythagorean theorem.
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A rectangular picture frame is 15 cm wide and 36 cm tall. How long is its diagonal, in cm?
Answer: 39
A rectangular tablet is 21 cm wide and 72 cm tall. How long is its diagonal, in cm?
Answer: 75
A rectangular picture frame is 27 cm wide and 120 cm tall. How long is its diagonal, in cm?
Answer: 123
Tip: Draw the right triangle, decide which side is the hypotenuse, and use the Pythagorean theorem.
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