They are objects decoratively covered with lacquer. The lacquer - a transparent or sometimes colored, very durable woodfinish - was and is often used to cover and protect decorations made on the wood of the object.
Shellac and lacquer are both fairly easy to identify because they will redissolve in their original solvents. If alcohol (solvent alcohol from the hardware store, not rubbing alcohol) dissolves it then it's shellac. If lacquer thinner softens it, then it's lacquer. (lacquer thinner will also dissolve shellac, but alcohol will not immediately soften lacquer, so do the alcohol check first.) If neither alcohol nor lacquer thinner immediately affect it, then it's probably varnish.* http://ths.gardenweb.com/forums/load/wood/msg0822004022412.html
A bundle of Shingles will cover roughly 33 square feet. A square of Shingles (3 Bundles) will cover 100 square feet.
I would use a good primer first.
A square foot will cover a square foot, regardless of the depth of the material the cover is made of.
Three square feet would cover one square yard or 36 square inches.
It cover 500 thousand square miles.
"Square feet" aren't things that are used to cover area."35 square feet" is an amount of area that you have to cover with something.
The amount of acrylic paint needed to cover a canvas depends on the size of the canvas and the thickness of the paint layers. You can refer to a paint coverage chart to determine the approximate amount of paint required for your specific canvas size.
Yes. Cover the Alkyd Surface with Liquitex Clear Gesso first, then paint in acrylic. I've done this before with no ill effects whatsoever.
As long as the surface is clean and dull, then either an oil or acrylic primer can be used to cover oil-based paints.
Tiles that are two feet on a side cover 4 square feet. 378 of them cover 1512 square feet.