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

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asked Dec 9, 2020 149k views

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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?

Mathematics
middle-school

Shatema asked

by Shatema

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Answer:

3 √65 ≈ 24.2 ft

Explanation:

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

Schytheron answered Dec 15, 2020

by Schytheron

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