A slide is 21 feet long. To get to the top of the slide, you use a vertical 9-foot high rung ladder. What is the distance, b, from the bottom of the slide to the bottom of the stairs? Round your answer to the nearest tenth.

Question

Maurice

Mathematics

11 July, 17:19

A slide is 21 feet long. To get to the top of the slide, you use a vertical 9-foot high rung ladder. What is the distance, b, from the bottom of the slide to the bottom of the stairs? Round your answer to the nearest tenth.

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Answers (1)

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Charlize Bowers · Answer 1

Its a right angled triangle. You have C and have B all you need to find is A. usually for a question like this you would use the Pythagorean theorem which is A2+B2=C2 but since we already have c we will use C2-B2=A2

Now we fill in the values. (21) 2 - (9) 2=A2

441-81=360^2 so now with the 360^2 we have to squareroot it so the square root of 360 is 18.973f