The internal and external radii of a hollow hemispherical vessel are 6 – McqOptions

MCQOPTIONS

1.	The internal and external radii of a hollow hemispherical vessel are 6cm and 7cm respectively. What is the total surface area (in cm2) of the vessel?
A.	183π
B.	174π
C.	189π
D.	177π
Answer» B. 174π

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