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What is the radius of a circle which has a 50cm diametre?

It is 25cm


How do you find out the length of a radius?

Measure the diametre of the circle and divide by two to give the radius.


What is the diameter of a circle that has a radius of 12.4 meters?

Diametre = 2*radius so diameter = 24.8 metres.


How do you find the circumference of circles?

The circumference of a circle = pi*diametre = 2pi*radius


What is the diametre of a circle?

diametre of circle


Is the arc in a circle between the radius and the diametre?

No. An arc is part of the circumference - the rounded bit.


Which is longer radius or diameter?

Diametre is, since diametre = 2*radius


What is the straight line from the center of a circle to the outside called?

that is the radius. the diametre is the line going right accross the middle of the circle


How do you find the area of a circle that has a diameter of 4. 2?

2*radius=diametre radius=2.1 Area=pi*(radius)^2 Area=3.1428*2.1*2.1 Area=13.86


What is the radius of a circle with a diameter of 9 cm?

To calculate the radius is very easy, the formula is d/2 where d is diametre. therefore according to d/2 = 9cm/2 which is equals to 4.5 cm Result : the radius of a circle with a diameter of 9 cm is 4.5 cm.


What is the circumference of the circle if the diameter is 24 meter?

half of a diametre is radius. hence multiply the diameter by 0.5 then use the formular of cicumference, which is 2*pie*r


How do you calulate radius into diametre?

the radius is one-half the diameter radius = diameter/2 diameter = 2 x radius