Circle Circumference and Area Calculation
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The diameter of a circle is 10 centimetres. (a) Work out the circumference of the circle. ($\pi = 3$) (b) Work out the area of the circle. ($\pi = 3$)
This question includes visual content: A circle diagram is shown with a horizontal line segment passing through the center connecting two points on the circumference (diameter), labeled '10 cm'.
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Step by Step Written Solution
Hi Gülen, let's solve this circle geometry problem together step by step.
Circle Calculations
We are given a circle with a diameter of ten centimeters, and we are told to use three as the value for pi.
First, for part a, let's calculate the circumference. The formula for circumference is pi times the diameter.
Part (a): Circumference
Now, we substitute the known values: three for pi and ten for the diameter.
Multiplying these gives us thirty. So, the circumference is thirty centimeters.
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