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
230 square inches
230 square inches
9,940 square inches
9,940 square inches
580 square inches
580 square inches
34,790 square inches
To find the area of the squares, we can use the formula A = s^2, where s is the length of a side.
Given that s = 7, we can substitute this value into the equation to find the area of one square: A = 7^2 = 49 square inches.
Since there are 10 squares, the total area taken up by the squares would be 10 * 49 = 490 square inches.
To find the remaining space for the 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 the area of the 10 squares, we first need to find the area of one square. The area of a square is given by the formula A = s^2, where s is the length of each side.
Given that s = 7 inches, we can calculate the area of one square:
A = 7^2 = 49 square inches
Now, to find the total area of all 10 squares, we multiply the area of one square by 10:
Total area = 49 * 10 = 490 square inches
To find how much space Robert will have left for his presentation, we subtract the total area of the squares from the area of the poster board:
Remaining space = 720 - 490 = 230 square inches
Therefore, Robert will have 230 square inches left for his presentation.
To find out how much space Robert will have left for his presentation, we need to subtract the area of the 10 squares from the total area of the poster board.
First, we need to calculate the area of a single square with 7-inch sides. The formula to find the area of a square is A = s^2, where s is the length of a side. Let's substitute s = 7 into the formula:
A = 7^2
A = 49 square inches
Now, we have the area of a single square. To find the total area of the 10 squares, we simply multiply the area of one square by 10:
Total area of the 10 squares = 49 * 10 = 490 square inches
Finally, we subtract the total area of the 10 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 if he uses squares with 7-inch sides. So, the correct response is "230 square inches".