efrida and frazer who live 12 miles apart , meet at a restaurant that is directly north of efrida ' s home and directly east of frazer ' s home . if the restaurant is two miles closer to efrida ' s home , than to frazer ' s home , how many miles is the restaurant from frazer ' s home ?
"it ' s a simple geometry problem . look at the diagram below : answer : d ."
add(sqrt(divide(subtract(power(12, const_2), power(const_2, const_2)), const_2)), const_2)