What is the area of a circle if the diameter is 16 millimetres

201.1 mm²

Step-by-step explanation:

given that the diameter is 16mm,

radius = diameter : 2 = 16:2 = 8 mm

area of a circle is given by

A = πr², where

π=3.142

r = radius = 8 mm

Substituting these into the equation,

A = πr²

= 3.142 (8) ²

= 201.088 mm²

= 201.1 mm² (rounded to nearest tenth)