two vertical ladders length of 6 m and 11 m are kept vertically at a distance of 12 m . find the top distance of both ladders ?
so distance between the top points = ad = 122 + 52 − − − − − − − √ = 13122 + 52 = 13 so in paper b he did well . answer : c
sqrt(add(power(subtract(11, 6), const_2), power(12, const_2)))