What volume of an orange is edible if the peel is.5 cm thick and the radius is 5 cm?

Question

What volume of an orange is edible if the peel is.5 cm thick and the radius is 5 cm?

Answer 1

Is this question in the right place, its sort of mathematics, not geology! The peel of an orange is edible too. We can eat it in marmalade or plain for that matter, although it is a less popular kind of food.

If the peel thickness is one tenth of the radius, as the question supposes, then the volume left after the peel is removed is only 70% of the total volume, because the volume is according to the cube of the radius.

Now the volume of a sphere (another inaccurate assumption) is 4 x pi x radius cubed /3 . So to find the volume of the remaining fruit substitute in this formula for the radius of 5.0 - 0.5 = 4.5 cm.