Find the amount of the sales tax and the total cost.

Cost of item $200 tax rate 6%

To find the amount of the sales tax, you need to multiply the cost of the item by the tax rate.

Sales tax = Cost of item * Tax rate = $200 * 6% = $12

The total cost is the sum of the cost of the item and the sales tax.

Total cost = Cost of item + Sales tax = $200 + $12 = $212.

Therefore, the amount of the sales tax is $12 and the total cost is $212.