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

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92mm

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

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

circumference = 2pi50 = 314.159 cm to 3 decimal places

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

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92mm

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

Diametre = 2*radius so diameter = 24.8 metres.

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

diametre of circle

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

Diametre is, since diametre = 2*radius

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

circumference = 2pi50 = 314.159 cm to 3 decimal places

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

a circle with an area of 50cm has an area of 50cm... why did you even ask this question

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.