The diameter of this circle is 30cm.Calculate the distance around the circle (circumference).Don't forget to round off your answer to three significant figures.
Question
The diameter of this circle is 30cm.Calculate the distance around the circle (circumference).Don't forget to round off your answer to three significant figures.
Solution
To calculate the circumference of a circle, you can use the formula:
Circumference = πd
where:
- π is a constant approximately equal to 3.14159
- d is the diameter of the circle
Given that the diameter (d) of the circle is 30 cm, you can substitute this value into the formula:
Circumference = π * 30 cm
Using the value of π as 3.14159, the calculation becomes:
Circumference = 3.14159 * 30 cm = 94.24778 cm
Rounding this off to three significant figures gives a circumference of 94.2 cm.
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