1.

The circumference of a circle is 25.12 centimetres. What is the circle's area?Use 3.14 for ​.

Answer»

ANSWER:

We know:

Circumference is equal to approximately 25

Pi is equal to approximately 3

We ALSO know that diameter=circumferenceπ

We can quickly ESTIMATE that the diameter is approximately equal to

circπ=253=8

Now we can mentally multiply 8 × 3.14 and see that it is, INDEED, very close to 25.12.

Step-by-step explanation:

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