Question

The radius of a semicircular pipe is 13 cm. What length of a tape is required to wrap once around the pipe (π = 3.14)?

Answer 1

$r \: = 13cm \\ \frac{1}{2 } \times 3.14 \times 13 \times 13 \\ \frac{1}{2 } \times 530.66 = 265.33cm$

Answer is 265.33 cm

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