Rectangle's 81776

The length of the rectangle is 5 cm greater than its width. Determine the rectangle's dimensions if you know that its perimeter is 22 cm.

Correct answer:

a =  8 cm
b =  3 cm

Step-by-step explanation:

a=5+b 22=a+b+a+b  ab=5 2a+2b=22  Pivot:Row1Row2 2a+2b=22 ab=5  Row221 Row1Row2 2a+2b=22 2b=6  b=26=3 a=2222b=2222 3=8  a=8 b=3

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