i'm guessing the answer is in the question.
16 foot x 16 foot deck would be 256 square feet.
16 pounds
Every 16 inches
In math class: Draw a 16 cm long for the base. At each end draw a perpendicular line straight up 8 cm long for the sides. Connect straight across, this should be another 16 cm line. In building/construction. Lie out a 16 foot board for the base. Attach (nail on) a board to make both ends 8 feet long. Measure the diagonals until each is the same length then nail on the top board another 16 foot board. If the diagonals are equal you will have perpendicular sides.
If you are planning to build a wood deck for your house and do not want to worry about measuring and cutting lumber, consider plans to build a 16 foot by 16 foot deck. To build this simple square shape, the majority of the lumber you will need will be in the form of 8 foot planks. If you do not have a saw, have the lumber center cut the boards into the lengths you need. Then simply lay out two rows of 8 foot lengths so they measure 16 feet both vertically and horizontally.
To find the square footage of an 8 by 16-foot board, you multiply the length by the width. So, 8 feet multiplied by 16 feet equals 128 square feet. Therefore, an 8 by 16-foot board has 128 square feet.
FOUR
Assumption: 6 x 6 is using inches as the unit (half a foot) and a 4 foot board means 4 square feet of board. Each square foot of board can be cut into four half foot x half foot pieces. Therefore, the 4 foot board would be able to make 16 half foot x half foot (6 inch x 6 inch) blocks.
16 foot
To calculate the total square footage of a 1x6x8 foot board, you first need to find the surface area of one side of the board. Since the board is 1 foot wide and 8 feet long, the area of one side is 1 x 8 = 8 square feet. Since there are two sides to the board, you would multiply the area of one side by 2 to get the total surface area of the board, which is 8 x 2 = 16 square feet.
Area = 16 x 30 = 480 sq feet
It is 1/16 of real size. If something is 16 feet long, say a small car, the model will be 1 foot long.