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.