Answer:
width-30
perimeter-78
Step-by-step explanation:
Since the area is length x width = area
You can do the same thing but backwards:
Area/length = width
now replace that with numbers
270/9 = 30 millimeters
now to make sure imagine a rectangle
it has a length of 9 millimeters and a width of 30 millimeters
how do you find the area?
length x width = area
9 x 30 = 270
now to find the perimeter
(length x 2) + (width x 2) = perimeter
(9 x 2) + (30 x 2) = ?
18 + 60 = 78
hope this helps :)
