Asked by Anonymous
A cylinder of height 12cm and radius 5cm is made of cardboard use the value of 3.1 to calculate the total surface area of the cardboard needed to make
a) a closed cylinder.
b) a cylinder open at one end
a) a closed cylinder.
b) a cylinder open at one end
Answers
Answered by
Queen
I don't understand math lol
Answered by
PsyDAG
The surface area of a cylinder is height + 2(pi*r^2).
(pi*r^2) is the area at each end.
Is 3.1 the diameter or radius? 2r = D
(pi*r^2) is the area at each end.
Is 3.1 the diameter or radius? 2r = D
Answered by
oobleck
The surface area of a cylinder is 2 pi rh + 2(pi*r^2).
I don't know the answer
Answered by
Skyler
I don't get it
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