Terry moon answered 1/15/2008 How Many 4-inch By 8-inch Bricks Are Needed To Build A Walk 6 Feet Wide And 24 Feet Long? The area of the bricks is 32 sq in convert the area of the walk from feet to inches. So 6 ft = 72 inches by 24 feet = 288 inches the area of walk = 72in x 288 in = 20736 in/sq 20736/32 = 648 bricks