Betty measured the diagonal length of a playing card to be 15 inches. The short side of the card is 9 inches. What is the length of the long side of the playing card?

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Paul A Jungwirth asked Sep 6, 2022

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Betty measured the diagonal length of a playing card to be 15 inches. The short side of the card is 9 inches. What is the length of the long side of the playing card?

Mathematics
high-school

Paul A Jungwirth asked Sep 6, 2022

by Paul A Jungwirth

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15 votes

Answer:

L = 12 inches

Explanation:

Using the Pythagorean theorem:

15² - 9² = L²

L² = 144

L = 12 inches

Dmitry Erokhin answered Sep 12, 2022

by Dmitry Erokhin

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