The perimeter of the scale garden is 6 + 8 + 3 + 5 + 3 + 13 = 38 (you can find the missing side lengths by doing 6 - 3 and 13 - 8). Since 1 cm is 2.5 meters, 38 cm is 38 * 2.5 = 95 meters.
Basically you just need to multiply the two fractions together to get the depth of the turtle. Therefore the turtle is 3/12 miles deep or 1/4 mile deep.
