a wooden article was made by scooping out a hemisphere from each end of a solid cylinder.I the height of the cylinder is 10cm and it's base radius is 3.5cm. find it total s.a.

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. Height of cylinder = 10 cm
Radius of cylinder = 3.5 cm
Total surface area of the article
= C.S.A of cylinder + 2 C.S.A. of hemisphere
= 2 (3.5 (10) cm2
+ 2 [2 (3.5)
2
] cm2
= 70 cm2
+ 49 cm2
=  (70 + 49) cm2
= 119 cm2
= 119 ×
22
7
cm2
= 17 × 22 cm2
= 374 cm2
.
 
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 http://www.testlabz.com/ModelPapers/1_8_11_18.pdf

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