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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asked Aug 28, 2022 35.5k views

4 votes

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

Eric Cochran asked

by Eric Cochran

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1 Answer

5 votes

Answer:

L = 12 inches

Explanation:

Using the Pythagorean theorem:

15² - 9² = L²

L² = 144

L = 12 inches

Arseniyandru answered Sep 1, 2022

by Arseniyandru

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