Question

length 15 cm breath 9cm height 6cm of a shape godown how many cubes of sides 3m each placed one on the other can be kept in the godown

Answer 1

u are in class 9
l=15
b=9
h=6
then volume will be 15×9×6=810
volume of cube will be 3×3×3= 27
no of cube =810÷27=30
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Answer 2

Given :

• Length of room = 15 m
• Breadth of room = 9 m
• Height of room = 6 m
• Side of cube = 3 m

To Find :

• Number of cubes can be fitted in the room

Solution :

$\large\boxed{ \tt Volume_{room} =l \times b \times h } \\ \\ \tt \implies15 \times 9 \times 6 \\ \\ \tt \implies 810 \\ \\ \underline{ \tt Volume_{room} = 810 \: {m}^{3}}$

$\large\boxed{\tt Volume_{cube} = {a}^{3}} \\ \\ \implies \tt3 \times 3 \times 3 \\ \\ \implies \tt27 \\ \\ \underline{\tt Volume_{cube} = 27 {m}^{3} }$

$\tt No. of cube = \dfrac{Volume_{room}}{Volume_{cube}} \\ \\ \tt No. of cube = \dfrac{810}{27} \\ \\ \large\boxed{\tt \green{ No. of cube = 30}}$