Question

The square of 2.1 is _______

Answer 1

Answer:

4.41

Step-by-step explanation:

you multiply 2.1 times 2.1

Answer 2

ANSWER:

The square of 2.1 is 4.41

SOLUTION:

Given that the number is 2.1.  

We need to find the square value of 2.1 = $(2.1)^{2}$

We can do this converting 2.1 into fraction, and again we can convert the result to get square of 2.1

We know that $\mathrm{a}^{2}=\mathrm{a} \times \mathrm{a}$

Hence 2.1 can be written as $2.1 \times 2.1$

For our convenience, let’s convert decimal value to fraction value.  

2.1 can be converted to fraction value by multiplying and dividing by 10.

$\frac{21}{10} \times \frac{21}{10}$

Multiplying numerator with numerator and denominator with denominator. We get

$\frac{21 \times 21}{10 \times 10}=\frac{441}{100}$

Now again convert fraction to decimal. 441 divided by 100 yields 4.41

Hence,the square value of 2.1 is 4.41