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The circumference of a circle is 8.97cm. Find the length of the diameter. Give your answer rounded to 2 DP. PLEASE HELP ME

User Emre Acar
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1 Answer

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Length of diameter is 2.86 cm

Solution:

Given that circumference of a circle is 8.97 cm

To find: length of diameter

We can use the formula for circumference of circle to find radius and then we can find diameter

The circumference of circle is given as:


C = 2 \pi r

Where "r" is the radius of circle and
\pi is a constant equals to 3.14

Substituting c = 8.97 and
\pi = 3.14


8.97 = 2 * 3.14 * r\\\\8.97 = 6.28 * r\\\\r = (8.97)/(6.28)\\\\r = 1.4283

Thus radius of circle is 1.4283 cm

Finding diameter of circle

diameter = 2(radius)

diameter = 2(1.4283) = 2.8566

On rounding to two decimal point we get, 2.86

Thus length of diameter is 2.86 cm

User Orlanda
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