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A day full of math games & activities. Find one near you.
A day full of math games & activities. Find one near you.
What is the circumference and area of a circle with a radius of 4 meters?
Solution:
Given radius of the circle, r = 4 m
Circumference of a circle, C = πD = 2πr
⇒ C = 2πr = 2π × 4
C = 8π meters
The area of a circle is the space occupied by the circle in a two-dimensional plane.
Alternatively, the space occupied within the boundary/circumference of a circle is called the area of the circle.
The formula for the area of a circle is A = πr2, where r is the radius of the circle.
Area of a circle, A = πr2
⇒ A = π × (4)2
A = 16π meters
What is the circumference and area of a circle with a radius of 4 meters?
Summary:
The circumference and area of a circle with a radius of 4 meters are 8π meters and 16π meters respectively.