Maura is creating a quilt using right triangles. A large right triangle with a side length of 40√12

centimeters has smaller right triangles with side lengths of 5√3
centimeters along it. How many smaller lengths are running along the longer length?(1 point)

1 answer

To determine how many smaller right triangles with side lengths of \(5\sqrt{3}\) centimeters fit along the longer side of the large right triangle with side length \(40\sqrt{12}\) centimeters, we need to first identify the longer side of the larger triangle and then divide it by the length of the smaller triangles.

  1. Calculate the long side of the large triangle:

    • The side length of the large triangle is given as \(40\sqrt{12}\) centimeters.
    • We can simplify this: \[ \sqrt{12} = \sqrt{4 \times 3} = 2\sqrt{3} \] Thus, \[ 40\sqrt{12} = 40 \times 2\sqrt{3} = 80\sqrt{3} \]
  2. Determine how many smaller triangles fit along this length:

    • Each smaller triangle has a side length of \(5\sqrt{3}\).
    • We need to divide the length of the large triangle by the length of a smaller triangle: \[ \text{Number of smaller triangles} = \frac{80\sqrt{3}}{5\sqrt{3}} \]
  3. Simplify the division:

    • The \(\sqrt{3}\) terms cancel out: \[ \frac{80\sqrt{3}}{5\sqrt{3}} = \frac{80}{5} = 16 \]

Therefore, the number of smaller triangles that can fit along the longer side of the larger triangle is \(\boxed{16}\).