2(2)+2(3)=10 inches per rectangle, multiplied by 30 rectangles= 300 inches of red thread.
To calculate the total red thread needed, find the perimeter of one rectangle (10 inches) and multiply it by the number of rectangles (30), resulting in 300 inches of red thread needed.
The student's question involves finding the total length of red thread needed for the perimeter of 30 rectangles on a quilt. To calculate the perimeter of one rectangle, we use the formula P = 2l + 2w, where l is the length and w is the width of the rectangle. Here, the rectangle dimensions are 3 inches in length and 2 inches in width. Therefore, the perimeter of one rectangle is P = 2(3) + 2(2) = 6 + 4 = 10 inches.
To find the total amount of thread for 30 rectangles, we multiply the perimeter of one rectangle by the number of rectangles: 10 inches times 30 = 300 inches. Thus, 300 inches of red thread is needed for the perimeter of all rectangles in the quilt.
The perimeter of one rectangle is 10 inches, and with 30 rectangles, the total red thread needed is 300 inches. Therefore, 300 inches of red thread is required for the quilt. This is calculated by multiplying the perimeter of one rectangle by the total number of rectangles.
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