Radius 23 cm and height of a solid cylinder Is 26 cm. If the radius from the bottom of each cylinder | Three hemispheres of 3.5 cm are removed, So what will be the total surface area of the cylinder?
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A wooden article was made by scooping out a hemisphere from each end of a solid cylinder, as shown in given figure. If the height of the cylinder is 10 cm, and its base is of radius 3.5 cm, find the total surface area of the article.
Step-by-step explanation:
Let the original height of cylinder = 10cm
base radius of cylinder = 3.5cm
so base radius of hemisphere = 3.5cm(same as that of cylinder)
The total surface area would be the sum of curved surface area of cylinder and the surface areas of 2 hemispheres.
surface area of cylinder = 2πrh
surface area of one hemisphere = 2πr²
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