Question

Janat has a closed box measuring 12cm,15cm21cm.how many 1-cm cubes can she put inside the box?

Answer 1

Step-by-step explanation:

Length=20cm, Breadth=10cm. Height=9cm

External volume of box=20×10×9=1800cm

2

Thickness of wood=1cm

Internal volume of box=(20−2)(10−2)(9−2)=1008cm

2

Thus, volume of wood=1800−1008=792cm

3