Question

Find the area of the cardboard required to make a closed box of length 25 cm, breadth 0.5 m and height 15 cm.

Answer 1

Answer:

4750 cm²

Step-by-step explanation:

Length = 25 cm

Breadth = 0.5 m

             = 50 m

Height = 15 cm

∴ TSA = 2(lb+bh+hl)

          = 2( [25 × 50] + [50 × 15] + [15 × 25] )

          = 2 × 2375

          = 4750 cm²

Hence, 4750 cm² of cardboard is required.

Answer 2

Length = 25 cm

Breadth = 0.5 m
　　　 = 50 cm

Height = 15 cm

TSA = 2(lb+bh+lh)
　　= 2(25 × 50 + 50 × 15 + 15 × 25)
　　= 2 × 2375 cm²
　　= 4750 cm²