# a solid right cylinder is 18 cm high and the radius of the base is 7 cm .two equal right cones are drilled on the plane faces of the cylinder , height of each cone being1/3rd the height of the cylinder and the radius of base of each cone being equal to base of the cylinder . find the total surface  area of the remaining solid

Dear Student,

The following figure can be drawn based on the statements given.

Total surface area of the cone=${\mathrm{\pi r}}^{2}+\mathrm{\pi rl}$

Total surface area of solid left
=1100-713.68
=386.32

Regards,

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