Last updated on May 26th, 2025
When a number is multiplied by itself thrice, the resultant number is called the cube of a number. Cubing is used while comparing sizes of objects or things with cubic measurements. In this topic, we shall learn about the cube of -1.1.
A cube number is a value obtained by raising a number to the power of 3, or by multiplying the number by itself three times. When you cube a positive number, the result is always positive. When you cube a negative number, the result is always negative. This is because a negative number multiplied by itself three times results in a negative number. The cube of -1.1 can be written as (-1.1)³, which is the exponential form. Or it can also be written in arithmetic form as -1.1 × -1.1 × -1.1.
In order to check whether a number is a cube number or not, we can use the following three methods, such as multiplication method, a factor formula (a³), or by using a calculator. These three methods will help in cubing the numbers faster and easier without feeling confused or stuck while evaluating the answers. By Multiplication Method Using a Formula Using a Calculator
The multiplication method is a process in mathematics used to find the product of two numbers or quantities by combining them through repeated multiplication. It is a fundamental operation that forms the basis for more complex mathematical concepts. Step 1: Write down the cube of the given number. (-1.1)³ = -1.1 × -1.1 × -1.1 Step 2: You get -1.331 as the answer. Hence, the cube of -1.1 is -1.331.
The formula (a + b)³ is a binomial formula for finding the cube of a number. The formula is expanded as a³ + 3a²b + 3ab² + b³. Step 1: Split the number -1.1 into two parts, as -1 and -0.1. Let a = -1 and b = -0.1, so a + b = -1.1 Step 2: Now, apply the formula (a + b)³ = a³ + 3a²b + 3ab² + b³ Step 3: Calculate each term a³ = (-1)³ 3a²b = 3 × (-1)² × (-0.1) 3ab² = 3 × (-1) × (-0.1)² b³ = (-0.1)³ Step 4: Add all the terms together: (a + b)³ = a³ + 3a²b + 3ab² + b³ (-1 - 0.1)³ = (-1)³ + 3 × (-1)² × (-0.1) + 3 × (-1) × (-0.1)² + (-0.1)³ = -1 - 0.3 - 0.03 - 0.001 = -1.331 Step 5: Hence, the cube of -1.1 is -1.331.
To find the cube of -1.1 using a calculator, input the number -1.1 and use the cube function (if available) or multiply -1.1 × -1.1 × -1.1. This operation calculates the value of (-1.1)³, resulting in -1.331. It’s a quick way to determine the cube without manual computation. Step 1: Ensure the calculator is functioning properly. Step 2: Input -1.1 Step 3: If the calculator has a cube function, press it to calculate (-1.1)³. Step 4: If there is no cube function on the calculator, simply multiply -1.1 three times manually. Step 5: The calculator will display -1.331.
The cube of any even number is always even, while the cube of any odd number is always odd. The product of two or more perfect cube numbers is always a perfect cube. A perfect cube can always be expressed as the product of three identical groups of equal prime factors.
There are some typical errors that might occur during the process of cubing a number. Let us take a look at five of the major mistakes that might be made:
What is the cube of -1.1?
The cube of -1.1 is -1.331.
First, let’s find the cube of -1.1. We know that the cube of a number is such that x³ = y, where x is the given number, and y is the cubed value of that number. So, (-1.1)³ = -1.331. Hence, the cube of -1.1 is -1.331.
If the side length of a cube is -1.1 cm, what is the volume?
The volume is -1.331 cm³.
Use the volume formula for a cube V = Side³. Substitute -1.1 for the side length: V = (-1.1)³ = -1.331 cm³.
How much larger is (-1.1)³ than (-0.9)³?
(-1.1)³ - (-0.9)³ = -0.802.
First, find the cube of -1.1, which is -1.331. Next, find the cube of -0.9, which is -0.729. Now, find the difference between them using the subtraction method. -1.331 - (-0.729) = -0.802. Therefore, (-1.1)³ is -0.802 larger than (-0.9)³.
If a cube with a side length of -1.1 cm is compared to a cube with a side length of -0.5 cm, how much larger is the volume of the larger cube?
The volume of the cube with a side length of -1.1 cm is -1.331 cm³.
To find its volume, we multiply the side length by itself three times (since it’s a 3-dimensional object). Cubing -1.1 means multiplying -1.1 by itself three times: -1.1 × -1.1 = 1.21, and then 1.21 × -1.1 = -1.331. The unit of volume is cubic centimeters (cm³), because we are calculating the space inside the cube. Therefore, the volume of the cube is -1.331 cm³.
Estimate the cube of -1.09 using the cube of -1.1.
The cube of -1.09 is approximately -1.295.
First, identify the cube of -1.1, The cube of -1.1 is (-1.1)³ = -1.331. Since -1.09 is only a bit less than -1.1, the cube of -1.09 will be slightly larger than the cube of -1.1. The cube of -1.09 is approximately -1.295 because the difference between -1.09 and -1.1 is small. So, we can approximate the value as -1.295.
Binomial Formula: It is an algebraic expression used to expand the powers of a number, written as (a + b)ⁿ, where ‘n’ is a positive integer raised to the base. The formula is used to find the square and cube of a number. Cube of a Number: Multiplying a number by itself three times is called the cube of a number. Negative Number: A number less than zero, represented with a minus sign (-). Exponential Form: It is a way of expressing numbers using a base and an exponent (or power), where the exponent value indicates how many times the base is multiplied by itself. For example, 2³ represents 2 × 2 × 2 equals 8. Volume: The amount of space that a substance or object occupies or that is enclosed within a container. In the context of cubes, it is calculated as the side length cubed.
Jaskaran Singh Saluja is a math wizard with nearly three years of experience as a math teacher. His expertise is in algebra, so he can make algebra classes interesting by turning tricky equations into simple puzzles.
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