Solving Perimeter, Length, and Width

Front

What is the perimeter?

Back

The perimeter is the total distance around a shape. For rectangles, it is calculated as P = 2(length + width).

Front

Back

P = 44

Front

Back

P = 30

Front

Back

P = 26

Front

What is the formula for the perimeter of a rectangle?

Back

P = 2(length + width) or P = 2l + 2w.

Front

If the length of a rectangle is doubled, what happens to the perimeter?

Back

The perimeter increases because P = 2(length + width) will have a larger length.

Front

If the width of a rectangle is halved, how does it affect the perimeter?

Back

The perimeter decreases because the width contributes less to the total distance.

Front

What is the perimeter of a square with side length 5?

Back

P = 4 x 5 = 20.

Front

What is the relationship between the length and width of a rectangle if the perimeter is 30?

Back

The sum of the length and width must equal 15, since P = 2(length + width).

Front

If a rectangle has a perimeter of 50 and a length of 15, what is the width?

Back

Width = (50/2) - 15 = 10.