Question

The perimeter of a rectangular painting is 328 centimeters. If the width of the painting is 68 centimeters, what is its length?

Answer 1

Do you know the formula for perimeter?

Answer 2

No :/ need helpp

Answer 3

ok, it's P= 2L+2W

Answer 4

The formula is: 2L + 2W = P

(length times 2) + (width x 2) = Permineter

So plug in your values. you know P is 328 and w is 68

Answer 5

2L + 2(68) = 328

and solve for L

Answer 6

The rest is basic algebra.

Answer 7

From 2L +2(68) =328,
2L = 328-136
2L = 192
L = 96

right??

Answer 8

2*68=136. 328-136=192. 192/2=96. So yes, the length of the painting is 96 centimeters.