how do i find how long the steel is in a 156 kg coil of sheet steel that is .80 mm thick and 50 cm wide.

Use density.

volume= Length*thickness*width

mass= density*volume
156kg=densitysteel*length*thickness*width

length= 156kg/(density*thickness*width)

look up density of steel. Watch units. thickenss is in mm,width is in cm, density will be in whateverunits.

To find the length of the steel in the coil, you need to use the formula:

Length = (Weight / (Thickness × Width)) × 1000

Here's how to calculate it step by step:

Step 1: Convert the thickness to meters:
0.80 mm = 0.80 × 0.001 = 0.0008 meters

Step 2: Convert the width to meters:
50 cm = 50 × 0.01 = 0.5 meters

Step 3: Calculate the length:
Length = (156 kg / (0.0008 m × 0.5 m)) × 1000

Now let's plug in the values and solve the equation:

Length = (156 / (0.0008 × 0.5)) × 1000
Length = (156 / 0.0004) × 1000
Length = 390,000 meters

Therefore, the length of the steel in the coil is 390,000 meters.