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The diagram shows a solid triangular prism with a cylindrical hole of radius r cm drilled through it. (i) The ratio of the volume of solid removed : volume of remaining solid is 1 : 6. Find the value of r. Using your answer in part (i), find the total surface area of the solid shown. ​

The Diagram Shows A Solid Triangular Prism With A Cylindrical Hole Of Radius R Cm Drilled Through It I The Ratio Of The Volume Of Solid Removed Volume Of Remain class=