Approximate volume means a rough estimation of the amount of space occupied by a three-dimensional object. It's like eyeballing it instead of getting out a ruler and being all precise about it. So, basically, it's a fancy way of saying "close enough."
This is actually how people approximate real volume of obscured 3D objects.
volume of a traffic cone
approximate means about
The diameter of a regulation beach volleyball is 26 inches. What is the volume?
Volume = 4/3*pi*143 = about 11494 cubic inches
The sphere's approximate volume is 523.6 cubic feet.
The approximate volume of a sphere with a diameter of 8 inches is 268 cubic inches.
The approximate percent of oxygen in Earth's lower atmosphere is around 20.95% by volume.
2 miles cubed
The approximate percentage by volume of oxygen in Earth's atmosphere at location 2 is around 21%.
This is actually how people approximate real volume of obscured 3D objects.
volume of a traffic cone
You calculate the volume of three-dimensional figures, not of numbers like pi.
200 mm^3
approximate means about
Volume = 4/3*pi*r3 = 5575.3 cubic inches
The diameter of a regulation beach volleyball is 26 inches. What is the volume?