# math

A cylindrical piece of wood of radius 4.2 cm and length 150 cm is cut length rise into two equal pieces. Calculate the surface area of one piece

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1. I'll use h for height, because l for length looks like the number 1.

the surface area is

two semi-circular ends: 2*(πr^2/2) = πr^2
the rectangular cut surface: 2rh
the curved surface: πrh

Now just plug and chug

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2. What is the final answer

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