what is the circumference and area of a 3cm circle?
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Answer:
The circumference of a circle is equal to the π times the diameter d .
◾since the diameter d is equal to the two times the radius r.
→the formula for circumference using radius is 2πr.
The circumference of a circle is equal to the π times the diameter d .
◾since the diameter d is equal to the two times the radius r.
→ the formula for circumference using radius is 2πr
◾Substitute the value of the radius ( r = 3 cm)
into the formula for the area of a circle .
π is. approximately equal to 3.14 .
◾Multiply 3.14 by 2
⚫ Multiply 6.28 by 3cm.
⚫. Multiply 3 by 6.28
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Radius = 3 cm
Diameter = 2r = 6 cm
Circumference = πd = 18.84 cm
Area = πr² = 28.26 cm²
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