Hi, I'm very confused about these 2 questions about Calculus 2. Please help me understand them with the solutions please. Thank you.

(1 point) Find the total mass of the triangular region shown below. All lengths are in centimeters, and the density of the region is 8(x) = 4 + x grams/cm?. mass = (include units)40 (1 point) The density of oil in a circular oil slick on the surface of the ocean at a distance of r meters from the center of the slick is given by 6(r) = 1+ /2 - kilograms per square meter. Find the exact value of the mass of the oil slick if the slick extends from r = 0 to r = 13 meters. Mass = Include units in your