Solve the problem.
-The stiffness of a rectangular beam is proportional to its width times the cube of its depth. Find the dimensions of the stiffest beam than can be cut from a 13-in.-diameter cylindrical log. (Round answers to the nearest tenth.)

A) w = 7.5 in.; d = 12.3 in.
B) w = 7.5 in.; d = 10.3 in.
C) w = 5.5 in.; d = 12.3 in.
D) w = 6.5 in.; d = 11.3 in.

Question

Solve the problem.
-The stiffness of a rectangular beam is proportional to its width times the cube of its depth. Find the dimensions of the stiffest beam than can be cut from a 13-in.-diameter cylindrical log. (Round answers to the nearest tenth.)

A) w = 7.5 in.; d = 12.3 in. 
B) w = 7.5 in.; d = 10.3 in. 
C) w = 5.5 in.; d = 12.3 in. 
D) w = 6.5 in.; d = 11.3 in.

Quizplus · Accepted Answer

The Answer of Solve the problem.
-The stiffness of a rectangular beam is proportional to its width times the cube of its depth. Find the dimensions of the stiffest beam than can be cut from a 13-in.-diameter cylindrical log. (Round answers to the nearest tenth.)

A) w = 7.5 in.; d = 12.3 in. 
B) w = 7.5 in.; d = 10.3 in. 
C) w = 5.5 in.; d = 12.3 in. 
D) w = 6.5 in.; d = 11.3 in.

Solve the Problem. -The Stiffness of a Rectangular Beam Is Proportional to Its