The size of spherical object with the weight of 38 pounds can be calculated if you know the density.
The question states "stone".
I prefer to perform such calculations in SI units (kilograms and meters) because it its SO much easier but just here I'll try using Avoirdupois and inches.
The density of "stone" is not precise and as "geology.about.com" states:
Rock density is very sensitive to the minerals that compose a particular rock type. Sedimentary rocks (and granite), which are rich in quartz and feldspar, tend to be less dense than volcanic rocks. And if you know your igneous petrology, you'll see that the more mafic a rock is, the greater its density.
We will assume a density of 1,8 ounces per cubic inch (about 3 grams per cubic centimeter)
38 pounds is 608 ounces
608 / 1,8 is about 338 (that is the volume in cubic inches of the stone)
V=4/3 pi r3 is the formula for the volume of a sphere
338 = 4/3 * 3.1416 * r3
80.6 = r3
4,32 = r
The diameter of the 38 pound spherical stone is approximately 8,6 inches
Denser stone would give a smaller diameter, less dens stone a larger diameter.
What is the approximate circumference of a circle that has a diameter of 25 yards
The approximate circumference of a circle with diameter fourteen centimeters is 44cm
Triple the diameter is.
The approximate area of a circle with a diameter of 60 centimeters is 2,827.43 square centimeters.
the diameter mutliplied by pi is the circumference. From a different view the circumference divided by diameter is pi.
What is the approximate circumference of a circle that has a diameter of 25 yards
What is the approximate circumference of a circle that has a diameter of 25 yards
The approximate diameter of a circle whose circumference is 21cm is: 6.68cm
The approximate circumference of a circle with diameter fourteen centimeters is 44cm
Mars has that (approximate) diameter.
Triple the diameter is.
The approximate area of a circle with a 12-inch diameter is: 113 square inches.
The approximate volume of a sphere with a diameter of 8 inches is 268 cubic inches.
The approximate surface area of a sphere with a diameter of 15 centimeters is 707cm2
The approximate diameter of Earth is about 12,742 kilometers (7,918 miles).
The approximate area of a circle with a diameter of 60 centimeters is 2,827.43 square centimeters.
What is the approximate circumference of a circle with a diameter of 500 kilometers? Use π ≈ 3.14.