50.265 square mm
4mm is smaller than 5mm
A circle with a radius of 2.5 meters has an area of 19.63 square meters.
The circle's area is 314.159 cm2
The area of any circle is (pi) x (radius)2 .The area of half the circle is just half of that number.
You neglected to say whether the 4mm is the radius of the circle, or the diameter,or the circumference. Each possibility leads to a different area.
50.265 square mm
You neglected to say whether the 4mm is the radius of the circle, or the diameter,or the circumference. Each possibility gives you a different area.
Using 3.14 as Pi the area of circle is: 50.24
Pie (3.14159...) times (*) 2 times (*) radius === or This equation may be for the area but hopefully it's for circumference. Anyway, the answer to your question is 25.13274123... (Pie times 2 times 4mm).
151200
127.5
h = 5.9949 m
A 4mm diamond measures 4mm in at least one measurement.
4mm is 0.15748032 of an inch.
4mm its in the question
As wide as 4mm on a ruler