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 Class 7 Mathematics Length, Perimeter and Area: Surface Area

The figure below represents a half of a cylindrical piece of wood of diameter 28cm and a length 50cm. What is the surface area of the wood? (Take =#pi=22/7#)
figsurfacearea1952020939.JPG
A. 6416#cm^2#
B. 4216#cm^2#
C. 3908#cm^2#
D. 2816#cm^2#

 (6m 36s)
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