60/2 will be the answer which is 30 cm…
How to find circumference if diameter is7?
Multiply the diameter by π, or 3.14. The result is the circle’s circumference.
What is the radius of a drum?
7. “The radius of a drum is 30 cm.
What is the volume of a drum?
Standard drums have inside dimensions of 572 millimetres (22.5 in) diameter and 851 millimetres (33.5 in) height. These dimensions yield a volume of about 218.7 litres (57.8 US gal; 48.1 imp gal), but they are commonly filled to about 200 litres.
What is the radius of a circle If 10cm is the diameter?
Given, diameter of the circle = 10 cm, ∴Radius=2D=210=5cm.
How do you find the circumference with the diameter?
2 x radius
Circle/Diameter
How big is a 5 centimeter diameter circle?
How far around is a circle that is 5 centimeters across? The circumference of a circle is pi times its diameter. The diameter of a circle is the distance from one edge to the other, passing through the center. It is twice the radius.
How to find the radius from the circumference?
How do I find the radius from the circumference? To find the radius from the circumference of a circle, you have to do the following: Divide the circumference by π, or 3.14 for an estimation. The result is the circle’s diameter. Divide the diameter by 2. There you go, you found the circle’s radius.
What is the ratio of circumference to diameter?
Circumference to diameter. You have probably noticed that, since diameter is twice the radius, the proportion between the circumference and the diameter is equal to π: C/D = 2πR / 2R = π. This proportion (circumference to diameter) is the definition of the constant pi. It is used in many areas, such as physics and mathematics.
What is the area of a circle with a radius of 50 cm?
What is the area of a circle with a radius of 50 cm? The area of a circle is pi times the square of its radius. The radius of a circle is the distance from the center to any edge. It is half of the diameter.
