Find the thickness of the rubber balloon?

Question

A balloon is blown into a perfect sphere of outer diameter 10.0 inches. The density of the rubber is 1.25 g/cm^3 . If the total mass of the rubber in the balloon is 24.0 g and the thickness of the rubber is uniform, what is that thickness?

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I was able to find the volume, which is 19.2 cm^3, but I don't know what to do after that. Please, any help will do!

Answer 1

If you're sure about the volume,

t = V/A  where A is the surface area of the spherical object = 4πR²