In the diagram, the cylinder and the hexagonal prism have the same height, h = 12 centimeters, and any horizontal cross sections at the same height have equal area. Use Cavalieri's principle to calculate the approximate radius of the cylinder, r, if the volume of the hexagonal prism is 280.8 cubic centimeters. Round your answer to the nearest hundredth.

r≈ __ centimeters.

Which pair of angles are vertical angles? ∠1 and ∠4∠1 and ∠2∠2 and ∠4∠2 and ∠3more than one answer.

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

Solve the system of equations. y= 2x y= x^2 - 15