Find the orthocenter for the triangle described by each set of vertices
k(3,-3), l(2,1), m (4,-3)

Can someone me with my hwplz(only the circled ones)

What is the volume of a rectangular prism if the length is 10.4 mm the width is 5 mm in the height is 8 mm

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?