A circle with a radius of 50 mm has an area of 7853.98 square mm
The area of a circle with a diameter of 240 mm is: 45,240 mm2
The area of a circle whose diameter is 6 mm is: 28.27 mm2
Not clear which area you want. The surface area of the cylinder can only be determined if you give the length of the cylinder as well as its diameter. As you don't give this I conclude you want the area of the ends only. Each end will be the difference between the area of the 100 mm circle and the 30 mm circle. 100 mm diameter area = 7855 sq mm. 30 mm diameter area = 707 sq mm. Therefore area of end = 7148 sq mm, and you have two ends so total = 14296 sq mm
Diameter of a circle is pi times the square of its radius. For a circle having a diameter of 7 mm, area = pi (3.1416) x 3.5 mm x 3.5 mm = 38.5 square millimeters.
Area in square mm = pi*1252
I do not know about a circle with an area of 100 nmm3.A circle with an area of 100 mm2 has a diameter of 11.28 mm.
The area of a circle with a diameter of 240 mm is: 45,240 mm2
The area of a circle whose diameter is 6 mm is: 28.27 mm2
Not clear which area you want. The surface area of the cylinder can only be determined if you give the length of the cylinder as well as its diameter. As you don't give this I conclude you want the area of the ends only. Each end will be the difference between the area of the 100 mm circle and the 30 mm circle. 100 mm diameter area = 7855 sq mm. 30 mm diameter area = 707 sq mm. Therefore area of end = 7148 sq mm, and you have two ends so total = 14296 sq mm
Diameter of a circle is pi times the square of its radius. For a circle having a diameter of 7 mm, area = pi (3.1416) x 3.5 mm x 3.5 mm = 38.5 square millimeters.
A circle with a diameter of 25 mm has an area of 490.9 square mm.
Area in square mm = pi*1252
Area = pi*552 square mm
Area = pi*282 square mm
A circle with a diameter of 4 mm has an area of : 12.57 mm2
Using 3.14 as Pi the area of circle is: 226.865
Area = pi*262 = 676*pi square mm