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Q.

The perimeter of a rectangle is 40 cm. The length of the rectangle is more than double its breadth by 2 cm. Find the length and breadth of the rectangle.


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a

14 cm

b

6 cm

c

10cm

d

7cm 

answer is A.

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Detailed Solution

Concept:
We know we need to find the dimensions of the rectangle, and now we get the perimeter, so we  use the formula perimeter = 2 (length + width) directly to solve the question. We also know that the length of the rectangle is more than twice the width, 2 cm, so the length is 2b + 2 cm. Where b is the width of the rectangle.
Perimeter of rectangle =40 cm (given)
Condition :- Question ImageQuestion ImagePerimeter Question ImageQuestion ImageQuestion Image∴ length =14 cm, breadth =6 cm
Hence, the correct answers are options 1 and 2 i.e., 14 cm and 6 cm
 
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The perimeter of a rectangle is 40 cm. The length of the rectangle is more than double its breadth by 2 cm. Find the length and breadth of the rectangle.