Find the volume of a pyramid with a square base, where the side length of the base is 12 ft and the height of the pyramid is 7.1 ft. Round your answer to the nearest tenth of a cubic foot.

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax