144 steps

To get around the garden we have to take 144 steps. 8 steps less in width than in length. One step is 5 decimetres long. What are the dimensions of the garden? What is its perimeter and its area?

Correct answer:

a =  20 m
b =  16 m
o =  72 m
S =  320 m2

Step-by-step explanation:

k=5 dm m=5:10  m=0.5 m o=144 k=144 0.5=72 m  2 (a+b)=o a=b+8 k 2 (a+b)=72 a=b+8 0.5  2a+2b=72 ab=4  a=20=20 m b=16
S=a b=20 16=320 m2

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