By Gertrude Chavez-Dreyfuss NEW YORK (Reuters) – The euro and sterling plummeted to fresh 20-year and 37-year lows against a surging U.S. dollar on Friday after surveys showed the downturn in business activity across the euro zone and Britain accelerated this month and the economies were likely entering a recession. Also weighing on sterling, Britain’s new finance minister Kwasi Kwarteng announced tax cuts and household and corporate support measures and the UK debt office laid out plans for 72 billion pounds ($79.74 billion) of additional issuance for this financial year to fund the stimulus….