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Question

<p>&lt;p&gt;If a wheel covers a distance of 880 m in 40 rotations, then the diameter of the wheel is?&lt;/p&gt;</p>

A 5 m Correct Answer Incorrect Answer
B 3.5 m Correct Answer Incorrect Answer
C 14 m Correct Answer Incorrect Answer
D 21 m Correct Answer Incorrect Answer
E 7 m Correct Answer Incorrect Answer

Solution

<p>&lt;p&gt;Distance covered in 40 rotations = 880 m&lt;/p&gt; &lt;p&gt;Distance covered in 1 rotation = 880/40&lt;/p&gt; &lt;p&gt;= 22 m&lt;/p&gt; &lt;p&gt;&amp;there4; Distance covered in 1 rotation = circumference of the wheel&lt;/p&gt; &lt;p&gt;2&amp;pi;r = 22m&lt;/p&gt; &lt;p&gt;2r (diameter) = (22 &amp;times; 7)/22 = 7 m&lt;/p&gt;</p>

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