Use the equation a2+b2=c2 the 2 is an exponent. the a and b are the side lengths. so plug everything in and you get 1)2+1)2=c2 and your answer would get you to 2=c2 then square root 2 or your answer would be 2 with the square root sign
The answer is twelve because to Make the two fractions denominators equal you have to multiply the numerator and denominator by 4 to get the denominators equal which gets you a fraction of 12/16 and if you divide that by 1/16 because that is how long each lap is then you get 16 which is the amount of laps they swam