What is the circumference of this circle? Use π ≈ 3.14. Round your answer to the nearest tenth of a centimeter.

Question

anonymous · Answer

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mathmale · Answer

Please look up the formula for "circumference of a circle."  There are two versions.  Choose the one that involves the diameter of the circle.

anonymous · Answer

@mathmale diameter= Pi is the ratio of the circumference of a circle to the diameter. Thus, for any circle, if you divide the circumference by the diameter

mathmale · Answer

" diameter= Pi is the ratio of the circumference of a circle to the diameter" is true.  Write this symbolically:

Pi = circumference / diameter => Pi = C/D.

Solve this equation for C.

Use the given value of D to find C.

anonymous · Answer

A. 17.3 
B. 22.0
C. 34.5
D. 69.1
@mathav-raj

mathmale · Answer

KK:  I do hope you will try to find the correct answer yourself, using the hints I've given you.

If pi=Circ / Diam ,  pi = C/D

Solve that for C, please.

Then find C, the circumference.

anonymous · Answer

Whatever I will just guess