Surface area of a sphere = 4*pi*radius2
For a spherical shell, surface area = surface area of outer sphere - surface area of inner sphere
= 4*pi*(outer radius)2 - 4*pi*(inner radius)2
= 4*pi*[ (outer radius)2 - (inner radius)2 ]
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The surface area will increase one hundred fold.
this is funny cause i took an online test with this question
The earth is nearly a spherical object and its surface area = 4*pi*radius2
If the diameter doubles (x 2), the surface area quadruples (x 4).So if the original surface area is 3 units, the new one will be 12 units.
The total surface area! The total surface area! The total surface area! The total surface area!