If a gallon (3.78 L)of latex paint can cover 365 ft² of the surface of a wall,what is the average thickness of one coat of paint (in millimeters)? (12 in = 1 ft,2.54 cm = 1 in) A) 1.11 $\times$ 10^-1 mm B) 2.83 $\times$ 10^-1 mm C) 4.64 $\times$ 10^-1 mm D) 4.89 $\times$ 10^-1 mm E) 3.40 mm

Question

Quizplus · Accepted Answer

The correct answer is A.The volume of paint is 3.78 L = 3.78 $\times$ 10³ cm³. The area covered is 365 ft² = 365 $\times$ (12 in)² = 365 $\times$ (2.54 cm)² = 2.32 $\times$ 10⁵ cm². The average thickness of the paint is (3.78 $\times$ 10³ cm³) / (2.32 $\times$ 10⁵ cm²) = 1.63 $\times$ 10^-2 cm = 1.11 $\times$ 10^-1 mm.

If a Gallon (3 ×\times× 10-1 Mm B) 2 ×\times× 10-1 Mm C) 4

If a Gallon (3 $\times$ 10^-1 Mm
B) 2 $\times$ 10^-1 Mm
C) 4