Step-by-step explanation: Let h be the height of the box kite, Also the length of one face = 30 cm, Hence, the total area of the kite box that is covered by the fabric = 4 × Area of one face = 4 × 30 × h = 120 h According to the question, 120 h = 7200 h = 60 cm Hence, the height of the box = 60 cm, The volume inside the kite = The base area of the box × Its height = 30² × 60 = 900 × 60 = 54000 cm³
