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3 years ago

What is the circumference of a circle with a diameter of 21cm, rounded to the nearest tenth

Mathematics

2 answers:

vagabundo [1.1K]3 years ago

8 0

65.9 cm

Step-by-step explanation:

The formula for the circumference of a circle is...

$C=\pi d$

Since the problem asks to round to the nearest tenth, we know that we will convert pi to 3.14. We also know the diameter is 21, so we can put both of these in the formula.

$C=3.14*21$

C = 65.940

Rounded to the nearest tenth...

C = 65.9 cm

otez555 [7]3 years ago

7 0

Answer:

Step-by-step explanation:

22/7 * 21 = 66cm

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What is the circumference of a circle with a diameter of 21cm, rounded to the nearest tenth​

What is the circumference of a circle with a diameter of 21cm, rounded to the nearest tenth