Question

The radius of the circular surface of a cylinder is 8.4cm and its height is 4.5cm find (×=22/7)

Answer 1

Answer:

solution

radius of cylinder=8.4

height =4.5

total surface area of cylinder

=

$2\pi \: r(r + h) \\ = 2 \times \frac{22}{7} (8.4 + 4.5) \\ = 2 \times \frac{22}{7} \times 12.9 \\ = 81.0857$

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