Your garage door needs a new coat of paint. After stripping the old paint you wi
ID: 1411828 • Letter: Y
Question
Your garage door needs a new coat of paint. After stripping the old paint you will need one coat of primer and three coats of a regular paint. Each coat of paint is 0.010 in thick. The door is 654.5 cm wide and 8.00 ft high. Convert all units to cm Calculate how many liters of primer and how many litres of regular paint you will need. Pay attention to significant figures and express your final result using an appropriate number of significant figures. There is no need to consider best and worst cases.Explanation / Answer
a) Conversion
1 ft = 30.48 cm
1 in = 2.54 cm
1cm^3 = 10^-3 L
Length = l = 654.5 cm
width w = 8ft = 243.84 cm
thickness, t = 0.01in = 0.0254 cm
(b)
volume of each coat v = l*w*t = 654.5*243.84*0.0254 cm^3
v = 654.5*243.84*0.0254*10^-3 = L = 4.05 L
amount of primer = v*1 = 4.05 L
amount of regular paint = 3*v = 12.2L
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