Pa submarine submerged at a depth of -35.25 meters dives an additional 8.5 meters. what is the new depth of the submarine?

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

Four quarts of a latex enamel paint will cover about 200 square feet of wall surface. how many quarts are needed to cover 98 square feet of kitchen wall and 52 square feet of bathroom wall

Math i have no idea how to do a and b