If 3 inch square is covered with 1inch squares how many of the 1 inch squares are needed? What is the area of the larger square

9 1-inch squares will cover the bigger square. Its area is the same as the amount of squares needed, 9 inches.

56.6

step-by-step explanation:

the ratio of the perimeters is equal to the scale.

the ratio of the areas is equal to the square of the scale.

34 / 20 = k

a / 19.6 = k²

substituting:

a / 19.6 = (34 / 20)²

a = 19.6 (34 / 20)²

a ≈ 56.6