find the total surface of the hollow cylinder open at the both ends if the length is 12 cm and the external diameter is 10 cm and thickness is 2 cm
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Step-by-step explanation:
Given:-
Outside cylinder radius = 5cm
Height of outside and Inside cylinder = 12cm
Inside cylinder radius = 5cm-2cm
= 3cm
Cylinders are open at both end so we use curved surface are of a cylinder
CSA Of Outside Cylinder = 2×22/7×5×12
=
CSA Of Inside Cylinder = 2×22/7×3×12
=
CSA of the hollow cylinder = CSA of outside cylinder - CSA of inside cylinder
=
=
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