Respuesta :

Answer:

r=41/2

Step-by-step explanation:

You have to divide the diameter,  41, by 2 because the radius of the circle is half of the diameter. So, the answer would be 20.5

altavistard

Answer:

Step-by-step explanation:

                                                                41 cm

Recall that d = 2r.  Here, r = d/2, or r = -------------

                                                                     2