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48 is 75% of what numberThe diameter of a circle is 4 ft. Find its chu vi in terms of pipi.Anna invested 28,000 in an account paying an interest rate of 6.5% compounded daily. Assuming no deposits or withdrawals are made, how long would it take, to the nearest tenth of a year, for the value of the account to reach 39,500?A train traveled at the same speed for 3 hours. It went 77.6 miles in all. To the nearest thousandth of a mile per hour, how fast was the train going?as a number (557006.3+100000sqrt(\frac{557006.3^2)/(100000^2)-(3069952.372)/(100000))}{200000}