If the diameter of a cylinder is 28 cm and the
height is 120cm then the surface area
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Answer:
We have,
Diameter = 28 cm
Height = 20 cm
Radius = 28/2 = 14 cm
Now,
Total surface area = (2πr² + 2πrh) sq. unit
= (2×22/7 × 14² + 2×22/7×14×20) cm²
= 2992 cm²
Hence,
\underline {\bold {Total~surface~area~of~cylinder}}
Total surface area of cylinder
\underline {\bold { =~2992~cm^2}}
= 2992 cm
2
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