Brianna made a quilt for her cousin's doll. The quilt had a 7 × 7 array of different color square patches. If each patch is 3

1
2
in long, what is the area of the whole quilt

since 3 1/2 = 7/2, the area is

7*7*(7/2)^2 = 2401/4 in^2

To find the area of the whole quilt, we need to multiply the length and width of the quilt. In this case, the quilt has a 7 × 7 array of square patches.

The length of each square patch is given as 3 units. Therefore, the length of the quilt would be 7 × 3 = 21 units.

Similarly, the width of each square patch is also 3 units, so the width of the quilt would also be 7 × 3 = 21 units.

To find the area of the quilt, we multiply the length and width:

Area = Length × Width = 21 units × 21 units = 441 square units.

So, the area of the whole quilt is 441 square units.