It weighs 112.37 lb (50.97 kg). Here's how you can calculate it:
Determine the volume of the aluminum sheet with:
volume = width × length × thickness
For a 4 x 8 sheet with a 1/4 inch thickness, the volume is:
volume = 4 ft × 8 ft × 1/4 in = 0.6667 ft3
Multiply the volume by the density of aluminum. Since the specific alloy is not mentioned, we'll use the average density of aluminum, which is 168.55 lb/ft3 (2700 kg/m3):
weight = 0.6667 ft3 × 168.55 lb/ft3 = 112.37 lb
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