Question

A rectangle has a length of 9 millimeters and an area of 270 square millimeters.what is the width? what is the perimeter?​

Answer 1

Answer:

Width, 30.

Perimeter, 78.

Step-by-step explanation:

Width: 270/9, which is 30.

Perimeter 30+30+9+9, which is 78.

Answer 2

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 :)