Respuesta :
Answer:
r = 7
Step-by-step explanation:
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Answer: 1.75 or 1 3/4
Step-by-step explanation:
Because first you need to get R by it’s self by dividing it by 1/2 then if you divided it by one side you have to divide it by the other side so you get r=1.75 or 1 3/4.