Question

The length of a rectangle is 5 times the width.



What is the perimeter of the rectangle if the width is 12 inches?









A.
72 inches







B.
120 inches







C.
144 inches







D.
240 inches
@misty1212

Answer 1

The length of a rectangle is 5 times the width.
What is the perimeter of the rectangle if the width is 12 inches?

first, write down the formula for the perimeter of a rectangle \(\sf \large P_{rectangle} = (2\times length) + (2 \times width) \rightarrow P = 2L + 2W \)
then it says that the length is 5 times the width, that is \(\sf \large L = 5W \) and if the width is 12 inches it will be \(\sf \large P = 2(5\times 12) + 2(12) \)

Answer 2

@Pawtpie

Answer 3

I don't understand

Answer 4

So we need the perimeter, the distance around the rectangle.

Answer 5

A rectangle of course has length and width:

Answer 6

The problem also says that the length of the rectangle is 5 times the width, so:
\[l = 5w\]

Answer 7

It also says that the width is 12 inches
\[w = 12\]

Answer 8

l=60

Answer 9

Perfect :), and the width is 12, so you get:

So you can solve with the equation:
\[2(60) + 2(12)\]

Answer 10

60*2+12*2
120+24
184

Answer 11

Are you sure that 120 + 24 is 184? :)

Answer 12

no sorry it is 144:}

Answer 13

so it is c