Final answer:
Joan donated 946.352 milliliters of blood, as one pint is equivalent to 473.176 milliliters. To find the total, simply multiply 2 pints by 473.176 milliliters per pint.
Step-by-step explanation:
Converting Pints to Milliliters
To answer the question of how many milliliters of blood Joan donated when she gave 2 pints, we need to perform a unit conversion. In the United States customary system, one pint is equivalent to 473.176 milliliters. Therefore, if Joan donates 2 pints of blood, we can calculate the amount in milliliters by multiplying:
2 pints × 473.176 milliliters/pint = 946.352 milliliters.
So Joan donated 946.352 milliliters of blood.