# 9ft.

67. a carpenter is building a staircase between the second and

third floors of a building which is 9 feet in height. if the

tread or depth of each step must be 0.83 feet and the slope

of the staircase cannot exceed ,

a. how many steps should he plan?

b. find the measure of the rise or height of each step.

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Answers: 1

## Answers

9ft.67. a carpenter is building a staircase between the second andthird floors of a building which i...

A=125°, B=55°

Step-by-step explanation:

A=3B - 40°

A+B=180°

3B - 40° + B= 180°

4B = 180°+40°=220°

B=220°÷4 = 55°

A= 3 * 55 - 40° =125°

Step-by-step explanation:

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