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Question

If the perimeter of a rectangle with dimensions (2x+10) and (x+20) is 240 cm, Find the dimensions.

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Solution

perimeter is the sum of lengths and breadths of the rectangle
here the dimension is (2x+10) and ( x+20)
these are length and breadth
we know that rectangle has 4 side ,
perimeter =2 *(length +breadth)=240

2(2x+10+x+20)
=2*(3x+30)
=6x+60 =240
6x=240-60
6x=180
x = 30
there fore the dimensions are 2x+10 and x+20
= 60+10 aned 50

70, 50





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