HELP!! Does anyone know what 0.08 is in word form?

Which of the following are parts of a sphere

Circle a has a diameter of 7 inches, a circumference of 21.98 inches, and an area of 38.465 square inches. the diameter of circle b is 6 inches, the circumference is 18.84 inches, and the area is 28.26 square inches. part a: using the formula for circumference, solve for the value of pi for each circle. (4 points) part b: use the formula for area and solve for the value of pi for each circle. (4 points)

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3