Question

how many cubes of side 5 cm can be cut from a cube of side 20 cm​

Answer 1

No. of 5cm cubes that can be cut =

volume of 20cm cube /volume of 5cm cube

= 20^3/5^3

= 20×20×20/5×5×5

=4×4×4

= 64

therefore 64 cubes are cut of

hope it's helpful :-)

Answer 2

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TO REMEMBER...

     

The no. of cubes of side b cm which can be cut from a cube of side a cm is the quotient of $(\frac{a}{b})^3$,

(Remainder should be ignored if there occurs greater than 0. )

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Here,

a = 20

b = 5

(a / b)³

⇒ (20 / 5)³

⇒ 4³

⇒ 64

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Thank you. Have a nice day. :-))

           

#adithyasajeevan