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<html><body><h2 id="content-id-5187436920-2"><b>Mensuration 3D Questions Overview</b></h2><p>Mensuration 3D Questions have a good weightage in the Sbi Po Exam and the type of question asked in Sbi Po 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 3D Questions.</p><h2 id="content-id-7138642059-3"><b>Question On Mensuration 3D </b></h2>The height of a cylinder is 7 cm more than its radius, and the radius of a sphere is 9 cm. The total surface area of the sphere is 396 cm2 less than that of the cylinder. Find the height of the cylinder. (Take π = 22/7)
<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 : Easy </h3></div><div class="col-sm-6 show--dificulty--bar" style="display:inline-flex;"><h3 style="font-size:12px !important;"> Average Time : 38 Seconds </h3></div></div><h2 id="content-id-2309547168-4"><b> Mensuration 3D Questions Options</b></h2><ol><li><p>20 cm</p>
</li><li><p>16 cm</p>
</li><li><p>24 cm</p>
</li><li><p>18 cm</p>
</li><li><p>9 cm</p>
</li></ol> <h2 id="content-id-1258079364-5"><b> Mensuration 3D Questions Solution</b></h2><p>The correct answer is <strong>option 2 </strong>i.e.<strong> 16 cm.</strong></p>

<p>Let the radius of the cylinder be r cm.</p>

<p>Height of the cylinder = (r + 7) cm.</p>

<p>Radius of the sphere = 9 cm.</p>

<p>Total surface area of the cylinder = 2πr(r + h)</p>

<p>= 2 × 22/7 × r(r + r + 7)</p>

<p>= 44r(2r + 7)/7</p>

<p>Total surface area of the sphere = 4π × 9<sup>2</sup> = 4 × 22/7 × 81</p>

<p>= 7128/7 cm<sup>2</sup></p>

<p>According to the question,</p>

<p>44r(2r + 7)/7 − 7128/7 = 396</p>

<p>44r(2r + 7) − 7128 = 2772</p>

<p>44r(2r + 7) = 9900</p>

<p>r(2r + 7) = 225</p>

<p>2r<sup>2</sup> + 7r − 225 = 0</p>

<p>(2r + 25)(r − 9) = 0</p>

<p>r = 9 cm</p>

<p>Height = r + 7 = 16 cm.</p>

<p>∴ The height of the cylinder is 16 cm.</p>
<h2 id="content-id-3175426089-6"><b> Mensuration 3D Questions Tips and Tricks</b></h2><img loading="lazy" src="https://study.kdcampus.live/questions-blog-pdf/Mensuration_3D_Questions_Tips_and_Tricks.png" alt="Mensuration 3D Questions Tips and Tricks" height="260" width="480"><ol><li>Try to solve Mensuration 3D Questions without taking any help from the solutions.</li><li>Mensuration 3D Questions require proper usage of concept so firstly read the question thoroughly and then use the right concept. </li><li>In case you're not able to solve the question in less than 30 seconds in the exam then you should skip the question and move to the next question.</li></ol><h3><b>Daily Current Affairs </b></h3><img loading="lazy" src="https://study.kdcampus.live/questions-blog-pdf/Daily_Current_Affairs.png" alt="Daily Current Affairs" height="260" width="480"><p>KD Live is providing Current Affairs on a daily basis for Banking and a current affairs quiz too for the practice. 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The correct answer is option 2 i.e. 16  - Mensuration 3D Questions are asked in Sbi Po exams and your question has been explained by experts like Neetu Mam.

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