|29 talents and 730 shekels|
Since a talent is 3000 shekels, this was a total of 87,730 shekels, 1/7 shekel for each person counted. It was a total of 4386 1/2 pounds of gold.
According to Saadia Gaon (quoted in Ibn Ezra, Perush HaKitzur), 1/2 talent was used to plate each of the 48 beams of the Tabernacle, accounting for 24 talents. Another 2 talents was used for the four pillars holding the cloth partition; 1 talent for the menorah; 1 talent for the ark and its cover, and 1 talent for the table and golden altar. This accounts for the 29 talents. The additional 730 shekels (36.5 pounds) were used for such items as the fasteners and clothing.
Since 1/2 talent was used for each pillar, which was 10 cubits high, and 1 1/2 cubits wide, it can easily be calculated that the thickness of the gold on the pillars was approximately 1/100 inch.
If it is assumed that the same thickness was used all around the incense altar, it can be calculated that the top of the altar had a gold layer around 1/4 inch thick.