decrea
metre of water runs out?
,
15. How many rectangular blocks, each 2: em by
2
cm can be packed in a box 90 cm by
2 cm by 12
78 cm by 42 cm, internal measurements? How
many 4 cm cubes can be packed in this box, with
faces parallel to the sides?
Answers
Answer:
Length of box = 90 cm
Width of box = 78 cm
Height of box = 42 cm
Volume of box = 90 \times 78 \times 42 = 294840 cm^3
Length of block = 2.5 cm
Width of block = 2 cm
Height of block = 1.5 cm
Volume of block = 2.5 \times 2 \times 1.5 = 7.5 cm^3
No. of rectangular blocks can be packed = \frac{294840}{7.5}=39312
Side of cube = 4 cm
Volume of cube = 4^3 = 64 cm^3
No. of cubes can be packed = \frac{294840}{64}=4606.875
So, 4606 cubes can be packed
Hence 39312 blocks and 4606 cubes can be packed .
#Learn more :
How many cubes of side 2cm can be packed in a cubical box with inner side equal to 4cm?
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