A mass of 50 kiligrams causes a wooden beam to bend 6 centimeters . If the amount of bending varies directly with the object's mass , what mass will cause the beam to bend 8.7 centimeters ?

At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 16 cubic feet per minute. the diameter of the base of the cone is approximately three times the altitude. at what rate is the height of the pile changing when the pile is 12 feet high? (hint: the formula for the volume of a cone is v = 1 3 πr2h.)

When you answer this can you explain

Find the area of the regular hexagon if a side is 20 cm.