The radius would be 2.5 mm.
When you try to figure out an area of a circle, you square the radius, then multiply it by pi to get the area of a circle. A radius square is radius x radius, or radius squared.
A circle with a radius of 4 cm has an area of 50.27 square cm.
The area of a circle with a radius of 7 cm is: 153.9 cm2
The area of any circle is (pi) x (radius)2 .The area of half the circle is just half of that number.
The circumference of a circle, if the radius is 5mm, is about 31.42mm
The radius would be 2.5 mm.
The pressure on your thumb can be calculated by dividing the force (25N) by the area of the thumbtack head in contact with your thumb. The area can be found using the formula for the area of a circle, A = πr^2, where r is the radius (5mm). Therefore, the pressure on your thumb is 25N / (π * (5mm)^2) = 1N/mm^2, or 1 MPa.
The area of a circle 1cm in diameter is determined by the formula Pi x Radius x Radius. Radius is 5mm Pi is 3.14159 (roughly) So the area is 3.14159 x 5 x 5 Which is 78.5398163397448 square mm.
The area of a circle if the radius is 9m 254.5m2
The radius of a circle with the area of 36 is 3.385
The area of a circle of radius 21 is 1386
Area of a circle = pi*radius squared
The area of a circle with a radius of 14.4 is 651.4
A circle with a radius of 135 units has an area of 57,255.53 square units.
A circle with a radius of 10m has an area of 314.16 m2
The area of a circle with a radius of 2m is: 12.566 m2