Diagonals of rectangles: round to the nearest tenth
Draw the right triangle, decide which side is the hypotenuse, and use the Pythagorean theorem.
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A rectangular tablet is 10 cm wide and 10 cm tall. How long is its diagonal, in cm? Round to the nearest tenth.
Answer: 14.1
A rectangular tablet is 9 cm wide and 17 cm tall. How long is its diagonal, in cm? Round to the nearest tenth.
Answer: 19.2
A rectangular tablet is 19 cm wide and 3 cm tall. How long is its diagonal, in cm? Round to the nearest tenth.
Answer: 19.2
Tip: Draw the right triangle, decide which side is the hypotenuse, and use the Pythagorean theorem.
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