Find trusted answers to your questions with the help of IDNLearn.com's knowledgeable community. Ask your questions and receive reliable, detailed answers from our dedicated community of experts.

What is the exact circumference of a circle with a radius of 15 cm? Answers: A. 60cm B. 30cm C. 15cm D. 10cm





Sagot :

[tex]r=15cm\\\\circumference:2\pi r\\\\2\pi r=2\pi\cdot15cm=30\pi cm[/tex]