The perimeter of a rectangular painting is 354 centimeters. If the width of the painting is 79 centimeters, what is its length?

P = 2L + 2W

354 = 2L + 2(79)

354 = 2L + 158

196 = 2L

98 = L

To find the length of the rectangular painting, we can use the formula for the perimeter of a rectangle:

Perimeter = 2 × (Length + Width)

Given that the perimeter is 354 centimeters, and the width is 79 centimeters, we can substitute these values into the formula:

354 = 2 × (Length + 79)

Simplifying the equation:

354 = 2 × Length + 2 × 79
354 = 2 × Length + 158

Now, let's isolate the term with the length:

2 × Length = 354 - 158
2 × Length = 196

Dividing both sides of the equation by 2:

Length = 196 / 2
Length = 98 centimeters

Therefore, the length of the rectangular painting is 98 centimeters.

To find the length of the painting, you can start by understanding the concept of perimeter. The perimeter of a rectangle is the sum of the lengths of all its sides. In this case, the perimeter is given as 354 centimeters.

A rectangle has two pairs of equal sides. Let's label the width of the painting as "w" centimeters and the length as "l" centimeters.

In our case, the width is given as 79 centimeters. Therefore, we have w = 79.

To find the length, we need to use the formula for the perimeter of a rectangle:

Perimeter = 2 * (Width + Length)

Substituting the given values, we have:

354 = 2 * (79 + l)

Now, we can solve for the length:

354 = 2 * (79 + l)
177 = 79 + l
l = 177 - 79
l = 98

Therefore, the length of the painting is 98 centimeters.