With a 52 cm long lead wire, a 6 cm, 4 cm wide and () cm high rectangular teaching aid can be welded A. 2B. 3C. 4D. 5

With a 52 cm long lead wire, a 6 cm, 4 cm wide and () cm high rectangular teaching aid can be welded A. 2B. 3C. 4D. 5

(52-6 × 4-4 × 4) △ 4, = (52-24-16) △ 4, = 12 △ 4, = 3 (CM); therefore, B

With a 52 cm long lead wire, a 6 cm, 4 cm wide and () cm high rectangular teaching aid can be welded
A. 2B. 3C. 4D. 5

(52-6 × 4-4 × 4) △ 4, = (52-24-16) △ 4, = 12 △ 4, = 3 (CM); therefore, B

A wooden case without cover is 84 cm in length, 40 cm in width and 52 cm in height. Its thickness is 2 cm. How many cubic decimeters is the volume of this wooden case

80×36×50