Answer:
The area of the circle is 50.24 mm ²
Explanation:
To solve this exercise we need to use the area formula of a circle:
a = area
r = radius = 4mm
π = pi = 3.14
a = π * r²
a = 3.14 * (4mm )²
a = 3.14 * 16mm ²
a = 50.24 mm ²
The area of the circle is 50.24 mm ²