The volume of a metallic cylinder is 748cm^3.Its length is 14cm and its external radius is 9cm.Find its thickness
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Let the new radius of cylinder pipe=r
Volume of pipe=π[r1²-r2²]h
748=22/7×[(9)²-r²]×14
17=81-r²
81-17=r²
64=r²
r=8cm
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Volume of pipe=π[r1²-r2²]h
748=22/7×[(9)²-r²]×14
17=81-r²
81-17=r²
64=r²
r=8cm
Is this thankful
thank you
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