`(79210 div 1780)-5.5=sqrt(?)`

Options

A. 1512
B. 1521
C. 1251
D. 1531

Explanation

To solve the equation `(79210 div 1780) - 5.5 = sqrt(?)`, we will follow these steps:

### Step 1: Calculate the division
First, we need to divide 79210 by 1780.

\[ 79210 \div 1780 = 44.5 \]

### Step 2: Subtract 5.5
Next, we subtract 5.5 from the result of the division.

\[ 44.5 - 5.5 = 39 \]

### Step 3: Set up the equation
Now we have the equation:

\[ \sqrt{x} = 39 \]

### Step 4: Square both sides
To eliminate the square root, we will square both sides of the equation.

\[ x = 39^2 \]

### Step 5: Calculate 39 squared
Now we calculate \(39^2\).

\[ 39^2 = 1521 \]

### Final Answer
Thus, the value of the question mark is:

\[ x = 1521 \]

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