Question

riya make a cuboid of a cuboid of plasticine 5cm 2cm 5cm how many such cuboid will need to forms cube
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Answer 1

Answer:

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Step-by-step explanation:

Q1 ANs  Factors of 5 and 2 both are not in group of three. Therefore, the number must be multiplied by 2×5×2 = 20 to make it a perfect cube. Hence he needs 20 cuboids.

Q2-0.001728 = 1728/1000000

               = 27/15625

When we raise this number to power 3, we get:

(27/15625)³ = 19683/3814697265625

Meaning 0.001728 is the cube root of19683/3814697265625 which is a rational number

A rational number is a number that can be expressed as a/b where a and b are integers.