what is the perimeter of circle?
Answers
Answer:
C=2πr
Step-by-step explanation:
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Answer:
what is the perimeter of circle?
Ans--Perimeter is the distance around a closed figure and is typically measured in millimetres (mm), centimetres (cm), metres (m) and kilometres (km). These units are related as follows:
10 mm = 1 cm
100 cm = 1 m
1000 m = 1 km
The word 'perimeter' is also sometimes used instead of circumference.
If we know the radius
Given the radius of a circle, the circumference or perimeter can be calculated using the formula bwloe:
Perimeter (P) = 2 · π · R
where:
R is the radius of the circle
π is Pi, approximately 3.142
If we know the diameter
If we know the diameter of a circle, the circumference can be found using the formula
Perimeter (P) = π · D
where:
D is the diameter of the circle
π is Pi, approximately 3.142
If we know the area
If we know the area of a circle, the circumference can be found using the formula:
Perimeter (P) = √(4 · π · A )
where:
A is the area of the circle
π is Pi, approximately 3.142