Question

Paolo wrote the following equation for the perimeter of a rectangle.

P=2(l+w)

a. w=P-21
b. w=P-1
c. w=P-21/2
d. w=P+21/2

Answer 1

The answer is the option C

`W=(P-2L)/(2)`

Explanation:

we know that

The perimeter of a rectangle is equal to

`P=2(L+W)`

where

L ----> is the length side of rectangle

W ----> is the width side of the rectangle

Solve for W

That means -------> isolate the variable W

Divide by
`2` both sides

`(P)/(2)=W+L`

Subtract
`L` both sides

`W+L-L=(P)/(2)-L`

`W=(P)/(2)-L`

`W=(P-2L)/(2)`

Answer 2

Perimeter = 2(Length + Width)

Perimeter = 2Length + 2Width

Perimeter - 2Length = 2Width

(Perimeter - 2Lenght) / 2 = Width

Answer is C. w = P - 2l/2