The diameter of a £1 coin is 22.5 mm. Work out its circumference to the nearest centimetre.Required to answer. Single choice.
1 answer:
Answer:
7
Step-by-step explanation:
Circunference:
The circunference of a circle with diameter d is given by:
The diameter of a £1 coin is 22.5 mm.
Each mm has 0.1 cm, so the diameter, in cm, is of d = 2.25. Then
The circunference is of 7 centimeters.
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