Question

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13/20 Marks
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Work out the circumference of this circle.
Take it to be 3.142 and give your answer to 1 decimal place.
9m

Answer 1

C = 28.278 m

Explanation:

The attached figure shows a circle whose diameter is 9 m.

Radius = Diameter/2

r = 9/2 = 4.5 m

The circumferance of the circle is given by :

C = 2πr

Put r = 4.5 m in the above formula

C = 2 × 3.142 × 4.5

= 28.278 m

So, the circumference of this circle is 28.278 m.