Question

Given the circumference for a cicle is 66cm.find the diameter and radius of the circle

Answer 1

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Circumference = 2πr

66 = 2πr

33 = πr

$\sf r = \frac{33 \times 7}{22} = \frac{21}{2} = 10.5 \: \: cm$

so , Diameter = 10.5(2) = 21 cm

Answer 2

Answer:

Diameter = 21cm

Radius = 10.5cm

Step-by-step explanation:

Circumference = 2πr

2πr = 66cm

66 / 2π = r

Radius = 10.50422624...

Diameter = 2r

Diameter = 21.00845249...