find the perimetri of trapezium with sides 4 , 6,12 and distance between two parallel side is 3 .
1 / 2 * ( 6 + 12 ) * 3 = 27 answer : a
add(add(add(4, add(3, 3)), sqrt(add(power(subtract(multiply(4, 3), add(add(3, 3), sqrt(subtract(power(4, const_2), power(3, const_2))))), const_2), power(3, const_2)))), multiply(4, 3))