The area of rectangular based tanlē "of which longer side is 150% more than smaller side is `1440 m^(2)` and the tank contains `10800 m^(3)` water.
Total surface area of tank is opened from upper side.

Options

A. 2700 `m^(2)`
B. 2400 `m^(2)`
C. 3600 `m^(2)`
D. 4900 `m^(2)`

Answer

To solve the problem step by step, we will find the dimensions of the rectangular tank and then calculate the total surface area.

### Step 1: Define the dimensions of the tank
Let the smaller side of the rectangular base tank be \( x \) meters. According to the problem, the longer side is 150% more than the smaller side. Therefore, the longer side can be expressed as:
\[ \text{Longer side} = x + 1.5x = 2.5x \]