Question

The perimeter of a rectangle is 230 feet. The short sides are each 30 feet long, but the lengths of the long sides are unknown. Which equation represents this situation?

30+2a=230
2(30)+2a=230
2(30)a=230
30a=230

Answer 1

b

Explanation:

because perimeter of rectangle is 2(l+b)

Answer 2

For this case we have that by definition, the perimeter of a rectangle is given by:

`P = 2a + 2b`

Where:

a: It is the length of the rectangle

b: It is the width of the rectangle

We have as data that:

`P = 230 \ ft\\b = 30 \ ft`

Then, replacing we have:

`230 = 2a + 2 (30)`

Answer:

Option B