WebIt is given that,Radius of a circle = 21 cm.We know that π=22/7,So the circumference of a circle = 2πrSubstituting the values,=2∗22/7∗21So we get,=2∗22∗3=132 cm. Was this answer helpful? WebFeb 2, 2024 · Suppose you want to know how to find the circumference and area of a circle with an 8 cm radius.In that case, these would be the steps to follow: Use the …
Find the radius of a circle so that its area and circumference
WebDec 22, 2024 · To calculate the radius of a circle, divide its circumference by 2π; for the circle's diameter, divide the circumference by π. Let's say that the circumference of a given circle is 20 inches. Therefore, its radius is 3.18 in and diameter 6.37 in. Dominika Śmiałek, MD, PhD candidate. WebJan 24, 2024 · The circumference of a circle with a radius of 21 feet can be found using the formula: C = 2πr. where "C" is the circumference, "r" is the radius, and "π" is the mathematical constant pi, which is approximately equal to 22/7. Substituting the values given, we have: C = 2 x (22/7) x 21. ips cl
What is the circumference of a circle with radius 7 m?
WebGiven the circumference of the circle, C = 1 0 π m. The Circumference of a circle is given as 2 π r, where r is the radius of the circle. Hence I have => 2 π r = 1 0 π => r = 2 π 1 0 π = 5 m The radius of the circle, r = 5 m I hope this helps. Please do comment if you face any problem with my solution. WebFeb 2, 2024 · Determine the radius of your circle. For example, let's suppose it's 7 cm. Input the radius in the calculator, and you'll know the circle's circumference. The result should be 43.982 cm. To double-check your result, enter the radius in the circle perimeter formula: p = 2 × π × (7 cm) = 43.982 cm. WebArea of a circle: A = π r 2 = π d 2 /4 Circumference of a circle: C = 2 π r = π d. Circle Calculations: Using the formulas above and additional formulas you can calculate properties of a given circle for any given variable. … ips cistern