The volume of a metallic cylinder pipe is 748cm(incubic unit ).it length is 14 cm and it's external radius is 9 cm.Then,it's thickness is
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volume of metallic cylindrical pipe =[(pia×R^2h)-(pia×r^2×h)]=748cm^3
=pia×h(R^2-r^2)=748cm^3
=22/7)×14(9)^2-r^2=748cm^2
=22×2×(81-r^2)=748cm^2
81-r^2=748/44=68/4=17
- r^2=17-81
-r^2=-64
r^2=8^2
r=8cm
thickness is=R-r=9-8=1cm
=pia×h(R^2-r^2)=748cm^3
=22/7)×14(9)^2-r^2=748cm^2
=22×2×(81-r^2)=748cm^2
81-r^2=748/44=68/4=17
- r^2=17-81
-r^2=-64
r^2=8^2
r=8cm
thickness is=R-r=9-8=1cm
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