CBSE Class 7 Answered
The length of a rectangle is 5 cm more than the width. What are the dimensions of the rectangle if the perimeter is 34 cm?
Asked by Topperlearning User | 25 Nov, 2013, 01:48: AM
Expert Answer
Let us suppose that the width of the rectangle = b cm
So, length (l) of the rectangle = (b + 5) cm
Perimeter of the rectangle = 2 x (l + b)
34 = 2 x {(b + 5) + b}
34 = 2 x (2b + 5)
34 = 4b + 10
34 - 10 = 4b
24 = 4b [swap both sides]
4b = 24
b = = 6
Therefore, width = 6 cm and length = (b + 5) = 6 + 5 = 11 cm
Answered by | 25 Nov, 2013, 03:48: AM
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