Robert is preparing a poster board presentation. He wants to make a decorative pattern with 10 squares to fill part of the poster. The area of the posterboard is 720 in.² to find out how much space Robert will have left for his presentation. he uses squares with 7 inch sides evaluate 720-10,88 = 7.
To find out how much space Robert will have left for his presentation, we need to calculate the area of the 10 squares and subtract that from the total area of the poster board.
First, let's calculate the area of one square. The area of a square can be found by multiplying its side length by itself. In this case, the side length of each square is given as 7 inches. Therefore, the area of one square is 7 inches * 7 inches = 49 square inches.
Next, we need to find the total area of the 10 squares. Since there are 10 squares, we multiply the area of one square by 10:
49 square inches * 10 = 490 square inches.
Now we can subtract the area of the 10 squares from the total area of the poster board:
720 square inches - 490 square inches = 230 square inches.
Therefore, Robert will have 230 square inches of space left for his presentation on the poster board.