Question

the outer diameter of a spherical shell is 12 cm and its inner diameter is 8 cm .find the volume of metal contained in the shell. Also , find its outer surface area.

Answer 1

outer radius=6cm
inner radius =4cm
volume of the metal contained in the shell = $\frac{4}{3} \pi (R^3-r^3)$

                                                         where R=6cm 
                                                                     r=4cm
volume of the shell= 64.5cm^3
outer surface area=$4 \pi R^{2}$
                             =452.3cm^2                                

Answer 2

Answer:

hope it helps mate

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