How much is the roa core to usd?

Excuse me, could you please clarify for me what you mean by "roa core to usd"? I'm assuming you might be referring to the value of a particular cryptocurrency, but "roa core" is not a widely recognized term in the cryptocurrency or finance world. Are you perhaps referring to a specific coin or token that goes by a similar name, or is there a different term you meant to use? Assuming that you're asking about the value of a cryptocurrency in US dollars, the answer would depend on several factors, including the current market conditions, the demand for the cryptocurrency, and the supply of it available. The value of any cryptocurrency can fluctuate rapidly, so the most accurate way to find out its current value would be to check a reputable cryptocurrency exchange or pricing website. Is there a specific cryptocurrency you're interested in, or were you just curious about the general concept of converting cryptocurrency values to US dollars? If you have a specific coin or token in mind, I'd be happy to help you find its current value.