The figure below shows a cylinder of radius 42 cm and height 10 cm.Find its surface area.
A: 2640 cm²
B: 3420 cm²
C: 13 728 cm²
D: 11 088 cm²
Surface area of a cylinder=area of two circles+Area of curved surface
Surface area of a cylinder=2(πr²)+πdh
=2×22/7×(42)²+22/7×84×10
=11 088+2640
=13 728 cm²
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