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<html><body><h2 id="content-id-7123809546-2"><b>Mensuration Questions Overview</b></h2><p>Mensuration Questions have a good weightage in the Ssc Cpo Exam and the type of question asked in Ssc Cpo exam is similar to the question mentioned below. It has been solved and explained by KD Live Experts under the guidance of Neetu Mam and they have tried to elaborate the concept used in Mensuration Questions.</p><h2 id="content-id-5839067241-3"><b>Question On Mensuration </b></h2>A hollow cylinder of height 20 cm has an exterior radius = 12 cm and the thickness of the material is 1 cm find, the total surface area of the hollow cylinder.
<div class="row show--dificulty--bar" style="margin-top:8px;"><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex !important;border-right:0.1px solid #eee;"><h3 style="font-size:12px !important;">Difficulty : Moderate </h3></div><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex;"><h3 style="font-size:12px !important;"> Average Time : 33 Seconds </h3></div></div><h2 id="content-id-1802475693-4"><b> Mensuration Questions Options</b></h2><ol><li><p>3032 cm<sup>2</sup></p>
</li><li><p>3036 cm<sup>2</sup></p>
</li><li><p>3033 cm <sup>2</sup></p>
</li><li><p>3000 cm<sup>2</sup></p>
</li></ol> <h2 id="content-id-7439508621-5"><b> Mensuration Questions Solution</b></h2><p>The correct answer is <strong>option 2</strong> i.e. <strong>3036 cm<sup>2</sup>.</strong></p>

<p>As we know the total surface area of a hollow cylinder is</p>

<p>⇒ 2 × 22/7 × (R + r) × h + 2 × 22/7 × (R<sup>2 </sup>– r<sup>2</sup>)</p>

<p>Where R = outer radius, r = inner radius</p>

<p>Since, R = 12 cm</p>

<p>Outer diameter = 24 cm</p>

<p>Hence, inner diameter = 22 cm</p>

<p>⇒ r = 11 cm</p>

<p>Substituting in the equation above we get</p>

<p>TSA = 3036 cm<sup>2</sup></p>

<p><strong>Short Trick:</strong></p>

<p>In this question, the answer will be a multiple of 11. So check the option which will be divisible by 11.</p>

<p>Only option 2 is divisible by 11</p>
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Read the given statements - Syllogism Questions for Ssc Chsl

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The correct answer is option 2 i.e. 303 - Mensuration Questions are asked in Ssc Cpo exams and your question has been explained by experts like Neetu Mam.

A hollow cylinder of heig - Mensuration Questions for Ssc Cpo

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