Find the surface area of a cylinder which measures 2.3cm as its length and 7 cm as its radius.
A: 308 cm²
B: 409.2 cm²
C: 381.7 cm²
D: 101.2 cm²
Surface area of a cylinder=area of two circles+Area of curved surface
Surface area of a cylinder=2(πr²)+πdh
=2(22/7×7²)+22/7×14×2.3
=308+101.2
=409.2 cm²
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