Question

how 2√400 is 20 .......????​

Answer 1

Answer:

Step-by-step explanation:

Solution for What is 400 percent of 20:

400 percent *20 =

(400:100)*20 =

(400*20):100 =

8000:100 = 80

Now we have: 400 percent of 20 = 80

Question: What is 400 percent of 20?

Percentage solution with steps:

Step 1: Our output value is 20.

Step 2: We represent the unknown value with $x$.

Step 3: From step 1 above,$20=100\%$.

Step 4: Similarly, $x=400\%$.

Step 5: This results in a pair of simple equations:

$20=100\%(1)$.

$x=400\%(2)$.

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

$\frac{20}{x}=\frac{100\%}{400\%}$

Step 7: Again, the reciprocal of both sides gives

$\frac{x}{20}=\frac{400}{100}$

$\Rightarrow x=80$

Therefore, $400\%$ of $20$ is $80$

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Answer 2

Step-by-step explanation:

Because if you multiply 20X20 You will get 400. 2 is useful because (20)X(20) Two variables are there so 2√400 = 20