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Will give brainleast need help ASAP John is trying to find out how long he must make a staircase for his new deck which is 12 ft. high. He wants to start the stairs 21 ft. from …

Will give brainleast need help ASAP John is trying to find out how long he must make a staircase for his new deck which is 12 ft. high. He wants to start the stairs 21 ft. from …
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Will give brainleast need help ASAP

John is trying to find out how long he must make a staircase for his new deck which is 12 ft. high. He wants to start the stairs 21 ft. from the deck. How long a staircase does he need?

asked
User Shatema
by
8.3k points

1 Answer

5 votes

Answer:

3 √65 ≈ 24.2 ft

Explanation:

Length of staircase² = 21² + 12² = 585 = (3 √65)²

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User Schytheron
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8.0k points
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