5. The liquids which thoroughly mix with water are E Answer each in a few words only. 1. Write any two physical properties of materials. 2. Define the term 'solubility. 3. 5. Define the term 'transparency'. Name any two liquids miscible in water. Write the names of two transparent materials available in your home. 1 38 Fun Science Book​

Answer:

2.5

Step-by-step explanation:

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Cube Root of 18

The value of the cube root of 18 rounded to 4 decimal places is 2.6207. It is the real solution of the equation x3 = 18. The cube root of 18 is expressed as ∛18 in the radical form and as (18)⅓ or (18)0.33 in the exponent form. The prime factorization of 18 is 2 × 3 × 3, hence, the cube root of 18 in its lowest radical form is expressed as ∛18.

Cube root of 18: 2.620741394

Cube root of 18 in Exponential Form: (18)⅓

Cube root of 18 in Radical Form: ∛18

Cube Root of 18

What is the Cube Root of 18?

The cube root of 18 is the number which when multiplied by itself three times gives the product as 18. Since 18 can be expressed as 2 × 3 × 3. Therefore, the cube root of 18 = ∛(2 × 3 × 3) = 2.6207.

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How to Calculate the Value of the Cube Root of 18?

Cube Root of 18 by Halley's Method

Its formula is ∛a ≈ x ((x3 + 2a)/(2x3 + a))

where,

a = number whose cube root is being calculated

x = integer guess of its cube root.

Here a = 18

Let us assume x as 2

[∵ 23 = 8 and 8 is the nearest perfect cube that is less than 18]

⇒ x = 2

Therefore,

∛18 = 2 (23 + 2 × 18)/(2 × 23 + 18)) = 2.59

⇒ ∛18 ≈ 2.59

Therefore, the cube root of 18 is 2.59 approximately.

Is the Cube Root of 18 Irrational?

Yes, because ∛18 = ∛(2 × 3 × 3) and it cannot be expressed in the form of p/q where q ≠ 0. Therefore, the value of the cube root of 18 is an irrational number.

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Cube Root of 18 Solved Examples

Example 1: The volume of a spherical ball is 18π in3. What is the radius of this ball?

Solution:

Volume of the spherical ball = 18π in3

= 4/3 × π × R3

⇒ R3 = 3/4 × 18

⇒ R = ∛(3/4 × 18) = ∛(3/4) × ∛18 = 0.90856 × 2.62074 (∵ ∛(3/4) = 0.90856 and ∛18 = 2.62074)

⇒ R = 2.3811 in3

Example 2: What is the value of ∛18 + ∛(-18)?

Solution:

The cube root of -18 is equal to the negative of the cube root of 18.

i.e. ∛-18 = -∛18

Therefore, ∛18 + ∛(-18) = ∛18 - ∛18 = 0

Example 3: Find the real root of the equation x3 − 18 = 0.

Solution:

x3 − 18 = 0 i.e. x3 = 18

Solving for x gives us,

x = ∛18, x = ∛18 × (-1 + √3i))/2 and x = ∛18 × (-1 - √3i))/2

where i is called the imaginary unit and is equal to √-1.

Ignoring imaginary roots,

x = ∛18

Therefore, the real root of the equation x3 − 18 = 0 is for x = ∛18 = 2.6207.

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FAQs on Cube Root of 18

What is the Value of the Cube Root of 18?

What is the Value of 9 Plus 19 Cube Root 18?

Is 18 a Perfect Cube?

Why is the Value of the Cube Root of 18 Irrational?

If the Cube Root of 18 is 2.62, Find the Value of ∛0.018 .

Explanation:

Given,

Mass of oxygen = 8 g, molar mass of oxygen = 32 g/mol

Mass of hydrogen = 4 g, molar mass of hydrogen = 2 g/mol

Therefore amount of oxygen = 8/ 32 = 0.25 mol

And amount of hydrogen = 4/2 = 2 mol

From the gas equation PV = n RT, we get,

P X 1 = (0.25 + 2) X 0.083 X 300 = 56.02 bar

Hence, the total pressure of the mixture is 56.02 bar.

Answer:

i know but if we both are working together then we adjust properly

Answer:

1. Rub salt on fish. Keep it aside.

2. Grate 3 or 4 onions. Mix well with salt and ground spices.

3. Add 2 cupfuls of water to ensure enough gravy even after evaporation.

4. Bring the mixture to a boil and allow it to simmer for 15 minutes till 'cream' is formed at the edges

5. Add the salted fish and cook till it is done.

First of all, the (a)......

which is then (b)........ Next, three or four onions (c)......... with salt and ground spices. Then about two cupfuls (d).......... to the mixture to ensure that enough of gravy is left even after evaporation. This mixture (e)......... for 15 minutes till a 'cream' is formed at the edges. Finally, the salted fish (f).... it is done,