Asked by kudu
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
Answers
Answered by
Steve
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
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
Answered by
JOY
What is the final answer
Answered by
mohd
45cm
Answered by
Anonymous
3987.72
Answered by
Joel
Just do the working understanding nothing
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