Understanding Perimeter and Area

What is the formula for calculating the perimeter of a rectangle?

• Length plus Length plus Width plus Width

• 2 times (Length plus Width)

• Length plus Width

• Length times Width

If a rectangle has a width of 2 units and a length of 4 units, what is its area?

• 8 square units

• 6 square units

• 16 square units

• 12 square units

Which rectangle has the same perimeter as a 2 by 4 rectangle but a different area?

• Rectangle B with a perimeter of 10 units

• Rectangle C with a perimeter of 12 units

• Rectangle D with a perimeter of 16 units

• Rectangle A with a perimeter of 14 units

What are the factors of 8 that can be used to find a rectangle with the same area but different perimeter?

• 2 and 4

• 1 and 8

• 3 and 5

• 4 and 6

If a rectangle has an area of 8 square units, what could be its perimeter if it is 1 by 8?

• 16 units

• 18 units

• 22 units

• 20 units