Rectangular 8113

The playground has a rectangular shape. The length of the line around its perimeter is 440m. The longer side of the course is 140m long. How many meters does the size of the shorter side of the pitch measure?

Correct answer:

b =  80 m

Step-by-step explanation:

o=440 m a=140 m  o = 2(a+b)  b=o/2a=440/2140=80 m

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