Perimeter, Area, or Volume

Perimeter is

• the distance around a shape

• the amount of space taken up by a two-dimensional shape

• the amount of space occupied by a three-dimensional object

• the fourth-dimension

Area is

• the distance around an object

• the amount of space taken up by a two-dimensional shape

• the space occupied by a three-dimensional object

• the fourth-dimension

Volume is

• the distance around a shape

• the amount of space filling a two-dimensional shape

• the amount of space occupying a three-dimensional object

• the fourth-dimension

If I wanted to put a fence around my swimming pool, I would need to know....

• the area of the pool

• the perimeter of the pool

• the volume of the pool

• how much chlorine is in the pool

Leaves are falling! I want to buy a pool cover that will keep the leaves out of the water when we are not swimming. To get a pool cover that is the right size, I need to find the

• perimeter of the pool

• the number of cookouts that we'll have this summer

• the area of the pool

• the volume of the pool

My pool has a length of 20 meters. Its width is 10 meters.

What is the perimeter of my pool?

• 30 meters.

• 60 meters

• 30 square meters

• 60 square meters

My pool has a length of 20 meters and a width of 10 meters. What is the area of the pool?

• 60 meters

• 200 meters

• 20 square meters

• 200 square meters

Think about times when you might need to use perimeter or area.

Share a few examples.

Which of the following are irregular objects

• a rock

• a piano

• you

• a cube

In your own words, describe the process (displacement) that one might use to find the volume of an irregular object.