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Question
The length of room is 1.5 times of its breadth. If the area of the room is 216 sq. meters , what is the perimeter of the room ?
60 meter
54 meter
48 meter
50 meter
ANSWER : 1
Descrption
<pre>ধরি, ঘরটির প্রস্থ = x মিটার ,, দৈর্ঘ্য = 1.5x = 3/2x মিটার প্রশ্নমতে, <math xmlns = "http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo> × </mo><mfrac><mn>3</mn><mn>2</mn></mfrac><mo> × </mo><mi>x</mi><mo> = </mo><mn>216</mn><mo> </mo><mo> </mo><mspace linebreak = "newline"/><mo>⇒</mo><mo> </mo><mi>x</mi><mn>2</mn><mo> = </mo><mfrac><mrow><mn>216</mn><mo> × </mo><mn>2</mn></mrow><mn>3</mn></mfrac><mspace linebreak = "newline"/><mo>⇒</mo><mo> </mo><mi>x</mi><mn>2</mn><mo> = </mo><mn>144</mn><mo> </mo><mspace linebreak = "newline"/><mo>⇒</mo><mo> </mo><mi>x</mi><mo> = </mo><mn>12</mn></math> প্রস্থ = 12 মিটার. দৈর্ঘ্য = 3/2 × 12 = 18 মি. পরিসীমা = 2(12 + 18) মিটার = 60মিটার </pre>
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