a triangular bed is 4 yards long and measures 6 yards in a straight line from the corner to the side that is 4 yards long. if one bag of topsoil covers 10 square feet , how many bags of topsoil are ne

a triangular bed is 4 yards long and measures 6 yards in a straight line from the corner to the side that is 4 yards long. if one bag of topsoil covers 10 square feet , how many bags of topsoil are needed to cover the flower bed with one layer of topsoil