the ratio of three numbers is 1 : 2 : 3 and their sum is 60 . the second number of the three numbers is ?
"1 : 2 : 3 total parts = 6 6 parts - - > 60 1 part - - - - > 10 the second number of the three numbers is = 2 * 10 = 20 answer : c"
sqrt(divide(60, add(power(3, 2), add(power(1, 2), power(2, 2)))))