The length of a rectangle is 5cm more than its breadth . if the perimeter of the rectangle is 40 cm , find the dimensions f the
rectangle
2 answers:
Step-by-step explanation:
find
length and the breath
<h2> given</h2>
<h2>solution </h2>
length = x +5
<h2>perimeter 2 L+ B</h2>
<h3>2 x + x = 40</h3>
2 x + 5 = 40 / 2
2x + 5 = 20
2 x = 20 -5
2 x + 15
x = 15 /2
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<h3>Answer :- </h3>
<h3>Solution :- </h3>
- Let the breadth of the rectangle be x cm
- length of the rectangle = ( x + 5 ) cm
- perimeter of the rectangle= 2( l + b )
- 2 ( x + x + 5 ) cm
- 2 ( 2x + 5 ) cm
- ( 4x + 10 ) cm
<em><u>Transpose </u></em><em><u>1</u></em><em><u>0</u></em><em><u> </u></em><em><u>to </u></em><em><u>RHS </u></em>
- <em>therefore</em><em> </em><em>,</em><em> </em>
- 4x +<em> </em>10 = 40
- 4 x = 40 - 10
- x = 30 / 4 = 67.5
- Length of the rectangle = x + 5 = 7.5 + 5 = 12.5
- Breadth of the rectangle = x = 7.5 cm
<em>Hope </em><em>it </em><em>helps </em><em>!</em><em>!</em><em> </em>
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