The length of a rectangle is 3 inches more than the width. The area is 18 square inches. Find the dimensions

Width= 3 inch

Length= 6 inch

Step-by-step explanation:

we need to solve this problem by simultaneous equations

First equation will l=w+3 ( this is the equation for finding the length)

second equation will be l×w=18

substituting the 1st equation into the second, we get w(w+3)=18

=w²+3w=18

=w²+3w-18=0

using the factorising method we get

w²+6w-3w-18=0

=w(w+6)-3(w+6)=0

=(w-3)(w+6)=0

w+6=0

w=-6

We can't take this answer because width cannot be negative.

w-3=0

w=3

this is the width. Hence the length will be

l=w+3

=3+3

=6

this is the length.

Hope this cleared your doubt.

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step-by-step explanation: