the formula for finding the perimeter,p,of a rectangle with length /and width w is given.

Question

p =21 + 2w

which formula shows how the length of a rectangle can be determined from the perimeter and the width?

a.1=p/2 -2w

b.1=p-2w/2

c.1=p/2+w

d.1=p-2/2w

Answer 1

b

l = (p-2w)/2

p = 2l + 2w

2l = p -2w

divide both sides by 2

l = (p-2w)/2