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Mathematics

The curved surface area of a cylinder, with length 10 cm and radius 7 cm, is :

  1. 22 cm2

  2. 308 cm2

  3. 44 cm2

  4. 440 cm2

Surface Area, Volume, Capacity

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Answer

Given:

Radius of cylinder = 7 cm

Height of cylinder = 10 cm

As we know that curved surface area of cylinder = 2πrh

=2×227×7×10=2×227×7×10=2×22×10=440cm2= 2 \times \dfrac{22}{7} \times 7 \times 10\\[1em] = 2 \times \dfrac{22}{\cancel{7}} \times \cancel{7} \times 10\\[1em] = 2 \times 22 \times 10\\[1em] = 440 cm^2

Hence, option 4 is the correct option.

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