Write the principal of hydraulic press. Also give its application.

Explanation

### Step-by-Step Solution

**Step 1: Understanding the Principle of Hydraulic Press**
The principle of a hydraulic press is based on Pascal's law, which states that when pressure is applied to a confined fluid, the pressure change occurs throughout the fluid in all directions. In a hydraulic press, a small force applied on a smaller piston creates a pressure that is transmitted through the fluid to a larger piston, resulting in a larger force being exerted by the larger piston.

**Step 2: Formula Derivation**
The relationship between the forces and areas of the pistons can be expressed as:
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