3 years ago

The perimeter of a notebook is 38 inches. The area is 90 square inches. What are the dimensions of the notebook? PLEASE HELP

1 answer:

7 0

Notebook is a rectangular,so
P= 2w+2l is a perimeter,
A=wl is an area.

P=38 in.
A=90 in.

2w+2l=38
wl = 90

w+l=19
wl=90

We can see that 9*10=90, and 9+10=19,
so dimensions of the notebook are
10 in. and 9 in.

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