Question

I need help please . ​

Answer 1

Answer:

So with perimeter you need to sum up all the possible sides.

A rectangle has 4 sides, the two(horizontally) at the top are the same and the two vertically are also the same.

In order to model the system we do:

2(15)+ 2(L)=70

Alternatively the reduced form:

30+2L=70

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