1.

From a solid cylindrical wooden block of height 18 cm and radius 7.5 cm, a conical cavity of the same height and same radius is taken out. What is total surface area (in cm2) of the remaining solid?

A. 416.25 π
B. 472.5 π
C. 326.25 π
D. 270 π
Answer» C. 326.25 π


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