A 50-ft ladder is placed directly against the side of a large building. The base of the ladder is resting on ice, and it slips away from the building at a rate of 3 ft per minute. How fast is the top of the ladder slipping down the wall at the instant when the base of the ladder is 30 ft from the building?

What is the volume of a rectangular prism that is 120 centimeters by 2 meters by 1.5 meters in cubic meters?

Sum of the interior angles of a pentagon

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.