A piece of mass 36.81 kg is cut from a block of `4.0 xx 10^2` kg. Calculate the mass of the remaining block upto proper significant figures.

Explanation

To solve the problem of calculating the mass of the remaining block after cutting a piece from it, we can follow these steps:

### Step 1: Identify the given masses
- Total mass of the block = \( 4.0 \times 10^2 \) kg
- Mass of the piece cut from the block = 36.81 kg

### Step 2: Convert the total mass into a standard form
- The total mass can be expressed as:
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