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A wooden article was made by scooping out a hemisphere from each of a cylinder as shown in figure.

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asked Mar 14, 2018 in Mathematics by shabnam praween (19,050 points) ● 5 ● 6 ● 8
edited Mar 14, 2018 by shabnam praween

A wooden article was made by scooping out a hemisphere from each of a cylinder as shown in figure. If the height of the cylinder is 10 cm and its base is of diameter 7 cm, find the total surface area of the article.

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answered Mar 14, 2018 by mdsamim (213,225 points) ● 5 ● 10 ● 15
selected Mar 20, 2018 by faiz
 
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We have, r = 3.5 cm and h = 10 cm
Total surface area of the article
= Curved surface area of cylinder + 2 × Curved surface area of hemisphere

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