Thecircumference – the length of the outside boundaries of the circle. To find the area from the radius, it's very easy. a=\pi r^2 a = πr2. Diameter is just 2x radius, so to get the circle's area from the diameter: a=\pi (d/2)^2 a = π(d/2)2. And to find area from circumference, it's easiest to first conve. r=c/2\pi \\ a = \pi r^2 r = c/2π Thescale drawing enlarges the size of the machine component by a scale factor 7∙5. Image caption, Multiply each real length by the scale (7∙5). 8 × 7∙5 = 60, the component length is 60 mm InPreferences > Tools turn on show transformation values "top right". Turn on the ruler (from view menu). Right click it and set it to inches. Use the ellipse tool set it to Shape in the options bar. Hold Shift and Alt to pull out a circle from the centre watching the value in the size box as you do so. Acircle of radius = 2.25 or diameter = 4.5 or area = 15.9 cm has a circumference of 14.14 centimeters which is equal to: Use the this circumference length calculator above to find the perimeter of a circle given its diameter, or other parameters. Thecircumference is the distance around a circle (its perimeter!): Circumference. Here are two circles with their circumference and diameter labeled: Diameter = 1 Circumference ≈ 3.14159 . Diameter = 2 Circumference ≈ 6.28318 . Circle 2: Circle 1: Let's look at the ratio of the circumference to diameter of each circle: . Thespherical cap, also called the spherical dome, is a portion of a sphere cut off by a plane. The formula behind its volume is: volume = ( (π × h²) / 3) × (3r - h), or: volume = (1/6) × π × h × (3a² + h²), where the radius of the sphere is r, the height of the cap (the blue one) is h, and a is the radius of the base of the cap. Acircle of radius = 2 or diameter = 4 or area = 12.57 cm has a circumference of 12.57 centimeters which is equal to: Use the this circumference length calculator above to find the perimeter of a circle given its diameter, or other parameters. Whatis the circumference of a circle with a diameter of 3 cm? How far around is a circle that is 3 centimeters across? Use this easy and mobile-friendly calculator to compute the circumference of a circle given its diameter. Forexample, if 1 centimeter on a scale drawing represents 2 meters in actual distance, what does 1 square centimeter on the drawing represent in actual area? The square on the left shows a square with side lengths 1 cm, so its area is 1 square cm. The square on the right shows the actual dimensions represented by the square on the left. Goto Image / Canvas Size. Select By absolute size. At print size, type the width and height of the desired paper format (e.g. 21x29,7cm for A4) Set Anchor to Middle (if you want it centered on the page -- if you don't, you can use Rectangle Select and Move Selected Pixels to move it around afterwards) Then. Go to File / Print. Select Full page

1 cm circle actual size