Work out the circumference of a circle with diameter of 1.8 cm Take pi to be 3.142 and give your answer to 1 dp

asked Aug 15, 2021 152k views

5 votes

Work out the circumference of a circle with diameter of 1.8 cm

Take pi to be 3.142 and give your answer to 1 dp

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2 votes

$c = ( \alpha * \pi )/(180) * r \\ \\ c = (360\pi)/(180) * (9)/(10) \\ \\ c = (18\pi)/(10) \\ \\ c = 1.8 * 3.142 \\ \\ c = 5.7$

Jeangelj answered Aug 17, 2021

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3 votes

Answer: 5.7 cm

Explanation:

Circumference.= 2πr

= 2 x 3.142 x 0.9

= 5.7 cm.

MikaelW answered Aug 21, 2021