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The ratio between the perimeter and the breadth of a rectangle is 5:1. If the area of the rectangle is 294 square cm, what is the length of the rectangle?
  • a)
    12 cm
  • b)
    15 cm
  • c)
    19 cm
  • d)
    21 cm
  • e)
    None of these
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The ratio between the perimeter and the breadth of a rectangle is 5:1....
Perimeter=2*(l+b)
Perimeter/breadth = 5/1
2*(l+b)/b = 5/1
2l+2b = 5b
l= 3/2 b.
Area =l*b= 294 sq. units.
3/2 * b2 = 294
b=14
l= 21
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The ratio between the perimeter and the breadth of a rectangle is 5:1....
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The ratio between the perimeter and the breadth of a rectangle is 5:1. If the area of the rectangle is 294 square cm, what is the length of the rectangle?a)12 cmb)15 cmc)19 cmd)21 cme)None of theseCorrect answer is option 'D'. Can you explain this answer?
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