A wooden article is made by scooping out hemisphere from each end of the
solid cylinder. The total surface area of the article is
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We have
Height of cylinder= 10cm
radius of base= 3.5cm
Total surface area of the article =Curved surface area of the cylinder +2 surface area of a hemisphere
=2πrh+2(2πr
2
)
=2πr(h+2r)
=2×
7
22
×3.5(10+2×3.5)cm
2
=374cm
2
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Height of cylinder= 10cm
radius of base= 3.5cm
Total surface area of the article =Curved surface area of the cylinder +2 surface area of a hemisphere
=2πrh+2(2πr
2
)
=2πr(h+2r)
=2×
7
22
×3.5(10+2×3.5)cm
2
=374cm
2
Plz plz mark me in brain list and like plz plz please
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