If a child is 118 centimeters tall and 6 years old, I can check the general admission rules for most theme parks or tourist attractions.
Typically, children below 125-130 cm (4.5-5 feet) are considered small in stature and require a “children’s ticket” which usually costs less than an adult ticket. Since this child is just shy of that mark at 118 cm, they might be eligible for the discounted rate.
Assuming most theme parks have similar rules:
Children’s Ticket: around ¥200-¥300 (around \(28-\)43 USD)
Please note these prices are only a rough estimate and may vary depending on the specific attraction or country.