Question

how many 5 cm cubes can be cut from a cube whose edge is 20 cm?
(1) 100
(2) 64
(3) 32
(4) 4
​

Answer 1

Answer:

100

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Answer 2

Question:

How many 5cm cubes can be cut from a cube whose edge is 20cm?

⓵ 100

⓶ 64

⓷ 32

⓸ 4

Answer:

The number of 5cm cubes that can be cut from a cube whose edge is 20cm are 64 [0ption⓶].

Step-by-step explanation:

Let the two cubes be :

➻ Cube A : Edge = 5cm

➻ Cube B : Edge = 20cm

Now, let's find the volume of Cube A :

➻ Volume of cube = (Edge)³

➻ Vol. of cube A = (5cm)³

➻ Vol. of cube A = 125cm³

Also, the volume of Cube B :

➻ Volume of cube = (Edge)³

➻ Vol. of cube B = (20cm)³

➻ Vol. of cube B = 8000cm³

Finding the number of cubes that can be cut from the other cube :

➻ No. of cubes = Vol. of B/Vol. of A

➻ No. of cubes = 8000 cm³/125 cm³

➻ No. of cubes = 1600 cm³/25 cm³

➻ No. of cubes = 320 cm³/5 cm³

➻ No. of cubes = 64

•°• 64 cubes of Cube A can be cut from Cube B.