# The glass

1 m3 of glass weighs 2600 kg. Calculate the weight of the glass glazing panel with dimensions of 2.5 m and 3.8 m if the thickness of the glass is 0.8 cm

Correct result:

m =  197.6 kg

#### Solution:

$ρ=2600 \ \text{kg/m}^3 \ \\ \ \\ a=2.5 \ \text{m} \ \\ b=3.8 \ \text{m} \ \\ c=0.8 \ cm \rightarrow m=0.8 / 100 \ m=0.008 \ m \ \\ \ \\ V=a \cdot \ b \cdot \ c=2.5 \cdot \ 3.8 \cdot \ 0.008=\dfrac{ 19 }{ 250 }=0.076 \ \text{m}^3 \ \\ \ \\ m=ρ \cdot \ V=2600 \cdot \ 0.076=\dfrac{ 988 }{ 5 }=197.6 \ \text{kg}$

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