supremedreams1211 supremedreams1211
  • 13-05-2022
  • Mathematics
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i need help to solve this

i need help to solve this class=

Respuesta :

thishigopal
thishigopal thishigopal
  • 17-05-2022

Step-by-step explanation:

(6+r)^2 = 81 + r^2

36 + 12r+ r^2 = 81 + r^2

12r = 81-36 = 45

r = 15/4 = 3.75

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