Look at this table Gallons Cost, in of Gas Dollars 1 2.15 2 4.30 4 8.60 10 21.50 ? 30.10 20 43.00

what value is missing from the table

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.

so the rectangle is 80cm (area)

now to find the area of a triangle.

base times height.

4 times 8.

your answer is 96cm.

hope this .