The length of a cylinder is 80cm and the diameter of its base is 7cm.The whole surface area of the cylinder
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Length of the Cylinder
= Height of the Cylinder = 80 cm
Diameter = 7 cm
Radius = 7 / 2 cm
∴ Total Surface Area of the Cylinder
= 2Πr(r + h)
= [ 2 × 22 / 7 × 7 / 2 (7 / 2 × 80) ] cm²
= [ 22 × ( 167 / 2 ) ] cm²
= [ 11 × 167 ] cm²
= 1,837 cm²
Hence, the total surface area of the cylinder is 1,837 cm²
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