The length of the rope twisted around the log is 1) 1.6 m; 2) 14.8dm. What is the thickness of the log?

univerkov | September 17, 2021 | education

The thickness of the log is its diameter, and the length of the rope wrapped around the log is the circumference.

The circumference is: L = 2 * π * R = 1.6 m.

R = 1.6 / 2 * 3.14 = 0.255 m.

Then D = 2 * R = 2 * 0.255 = 0.51 m = 51 cm.

L = 2 * π * R = 14.8 dm.

R = 14.8 / 2 * 3.14 = 2.357 dm.

Then D = 2 * R = 2 * 2.357 = 4.714 = 47.14 cm.

Answer: The thickness of the log is 51 cm and 47.14 cm.

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