Posted by jason on .
If you put four 9inch square boards together to make a bigger square, what would be the area of the new larger board in square feet?

math 
PsyDAG,
How many boards are you using?
4 boards = 18 inches * 18 inches
144 square inches = 1 square foot.
9 boards = (27 * 27) square inches.
16 boards = ?