Question

What is the radius of a circle whose diameter is 15 cm? *
1 point
7.5 cm
15 cm
25 cm
30 cm

Answer 1

$radius = \frac{diameter}{2} = \frac{15}{2} = 7.5cm$

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Answer 2

R+R = Diameter
= x+ x=15
=2x=15
=x=15/2
=7.5

Hence, 7.5 Is the answer!