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The ratio between the radius of the base and theheight of a cylinder is 2:3., find the total surface area of the cylinder, itits volume is `1617``c m^3dot` |
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Answer» `r/h=2/3` `r=2/3h` Volume od cylinder`=pir^2h` `1617=22/7*2/3h*2/3h*2/3h*h` `h^3=(1617*7*9)/(22*4)` `h=21/2cm` `r=7cm` Total surface area of cylinder`=2pirh+2pir^2` `=2*22/7(7*21/2+7*7)` `=770cm^2`. |
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