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

User Roman Zenka
by
5.6k points

1 Answer

4 votes
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.




User Lmsasu
by
6.3k points
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