How to find the correct unit of measurement? i am struggling with this. what is the difference between ft³, ft and ft²? example:

the length of a rectangular play area is 40 ft. the width of the play area is 20 ft.

which is the correct unit of measurement to use when figuring out how much fence is needed to surround the play area?

a.
ft³

b.
ft

c.
ft²

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

Aflower has 26 chromosomes. to create a new flower, how many would a sperm cell have what is called?

Which of these tools or constructions is used to inscribe a hexagon inside a circle?