From a solid cylinder of radius 7 cm and height 14 cm a hemisphere depression is cut out a cone is joint with other and whose radius is same as cylinder and height of cone is 5 cm find the total surface area of solid so formed
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Answer:
Step-by-step explanation:
The total surface area of solid =
curbed surface area of hemisphere+c.r area of cone+ c.r of cylinder
=2πr²+πrl+2πrh
=2×22/7×7+22/7×7×5+2×22/7×7×14
=44+110+616
=770cm²
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