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 poster board is 720 square inches. To find how much space Robert will have left for his presentation if he uses squares with 7-inch sides, evaluate 720 − 10s2 when s = 7 .(1 point)
Responses
9,940 square inches
9,940 square inches
580 square inches
580 square inches
230 square inches
230 square inches
34,790 square inches
To find the area of 10 squares with side length 7 inches, we would calculate 10 * (7^2) = 10 * 49 = 490 square inches.
To find the remaining space for Robert's presentation, we would subtract this area from the total area of the poster board: 720 - 490 = 230 square inches.
Therefore, the correct answer is 230 square inches.
To find the area of 1 square, we need to calculate the side length squared. Since the side length is 7 inches, the area of 1 square is 7 * 7 = 49 square inches.
Since Robert wants to use 10 squares, the total area of the squares is 10 * 49 = 490 square inches.
To find how much space Robert will have left for his presentation, we subtract the area of the squares from the total area of the poster board: 720 - 490 = 230 square inches.
Therefore, Robert will have 230 square inches left for his presentation.
To find how much space Robert will have left for his presentation, we need to subtract the total area of the 10 squares from the total area of the poster board.
The area of a square is calculated by taking the side length and squaring it. So, the area of one square is (7 inches)² = 49 square inches.
Since Robert has 10 squares, the total area of all those squares is 10 * 49 square inches = 490 square inches.
To find the remaining space for Robert's presentation, we subtract the area of the squares from the total area of the poster board: 720 square inches - 490 square inches = 230 square inches.
Therefore, the space Robert will have left for his presentation is 230 square inches.