May someone help me with my related rates review because I'm very confused?

A 15-foot ladder is leaning against a wall.. The top of the ladder is sliding down the wall at a rate of 2 ft/sec. How fast is the bottom of the ladder moving when it is 12 feet away from the wall? Answer: Support | School MacBook Air 20 F2 F3 F4 F5 F6 F7 % & W # 4POSSIBLE POINTS: 5 Sand is being poured at a rate of 7.6 cubic centimeters per second and is forming an conical pile. The height of the pile is always a third of the radius. Determine how fast the height is changing at the instant the height is 5 cm. Round your answer to 3 decimal places. Answer : 1 2 Support | Schoology Blog | PRIVACY POLICY | Terms of Use MacBook Air DD 30 44 ES F7 F9 o & W # N 5 6 8 9 O Q W E R T Y U O P S D F G H K X C V B N M command command