. A rectangle has a perimeter of 24 units. If the width is 4 units, which of the following is the length?

A. 6 units

B. 8 units

C. 10 units

D. 16 units

2 answers

P = 2 * ( W + L )

P = 24

W = 4

24 = 2 * ( 4 + L )

24 = 2 * 4 + 2 * L

24 = 8 + 2 L Subtract 8 to both sides

24 - 8 = 8 + 2 L - 8

16 = 2 L Diwide both sides by 2

16 / 2 = 2 L / 2

8 = L

L = 8
each rectangle has perimeter of 24 unites,which one has the greatest area ? a 10,2b8,4 c11,1 d 6,6