The external and internal diameters of a hemispherical bowl are 10 cm and 8 cm r

Question

The external and internal diameters of a hemispherical bowl are 10 cm and 8 cm respectively. What is the total surface area of the bowl ?

Options:

A . 257 cm2

B . 286 cm2

C . 292 cm2

D . 302 cm2

Answer: Option B

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