Question

The perimeter of a rectangle is 42 inches. If the width of the rectangle is 6 inches, what is the length? A. 12 inches B. 15 inches C. 21 inches D. 40 inches


If you get it right i would mark you as brain list.

Answer 1

Answer:

Perimeter of rectangle 2(l+b)

42=2(l+b)

21=6+l

l=21-6=15

Answer B

Step-by-step explanation:

Answer 2

Answer:

B. 15 Inches

Step-by-step explanation:

To find perimeter, the equation is L + L + W + W.

If the width of the rectangle is 6 inches, then we multiply that by 2. 6 + 6 is 12.

The next thing we do is execute this equation: 42 - 12. That will get 30!

The final thing we do is divide 30 by 2. If that's too hard, then you can multiply  up from 10 to find 30, and that number you multiplied by is the answer. You got 15, right? 30 / 2 is 15, the same as 15 x 2 is 30. So the answer is B.

I hoped this helped you ; )