Look at the figure above. This is a staircase consisting of 5 steps. The height

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Look at the figure above. This is a staircase consisting of 5 steps. The height of each in-step(green area) is 6 cms.
(i) What is the total length of the pink line if the breadth of each step is 32 cms.
(ii) Write the ratio of the height of the instep to its total length of the pink line in the form of a fraction.
[4 MARKS]

Options:

Answer: Option A
:
(i) Formula: 1 Mark
Result: 1 Mark
(ii) Formula: 1 Mark
Result: 1 Mark
(i) Given: The height of the staircase = 6 cms
The breadth of the staircase = 32 cms

Look At The Figure Above. This Is A Staircase Consisting Of ...

So, length of the pink line will be = (breadth + height) of five steps.

\Rightarrow

5 (6 cms) + 5 (32 cms)

\Rightarrow 5 [6 + 32] c m s

\Rightarrow 5 [38] c m s

\Rightarrow 190 c m s

(ii)

\frac{T h e t o t a l l e n g t h o f t h e i n - s t e p}{T h e t o t a l l e n g t h o f t h e p i n k l i n e}

\Rightarrow \frac{5 (6) c m s}{190 c m s}

\Rightarrow \frac{30}{190} \Rightarrow \frac{3}{19}

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