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

Answer:

$199.7cm (1dp)$

Step-by-step explanation:

The length of a strip - obtained from Pythagoras is

$28^2 + 18^2 = 1108$

$\sqrt{1108} = 33.29$

We need 6 of these strips.

$33.29*6=199.74$

Answer 2

Answer:

199.7

Step-by-step explanation: