Question

A builder makes staircases where each step is 28 cm long and rises 18 cm so people don't trip. Every

staircase has a stringer - a diagonal support connecting all of the steps.
28 cm
18 cm
stringer
A certain staircase will have 6 steps.
What is the length of the stringer for this staircase?
Round your answer to the nearest tenth of a centimeter.

Answer 1

199.7

Explanation:

Answer 2

`199.7cm (1dp)`

Explanation:

The length of a strip - obtained from Pythagoras is

`28^2 + 18^2 = 1108`

`√(1108) = 33.29`

We need 6 of these strips.

`33.29*6=199.74`