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A closed circular cylinder has diameter 20 cm and height 30 cm. find the total surface area of the cylinder.

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by preet2002

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by preet2002

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height=30 cm

radius= 20-10cm=10cm

Solution:

A=2πrh+2πr2=2·π·10·30+2·π·102≈2513.27412

therefore, answer= 2513.27cm

The Brainliest Answer!

so the radius = 20/2 = 10 cm

Height = 30cm

Total surface area of the cylinder =2πr(h+r)

= 2 × 22/7 ×10 (30+10)

= 440/7 × 40

= 17600/7

=2514.28 cm²