A cube has an edge length of 30. A rectangular solid has edge lengths 20,30 and L. If the cube and the rectangular solid have equal surface areas, what is the value of L?
Answer Choices
A. 15
B. 21
C. 42
D. 40
E. 96
A cube has an edge length of 30. A rectangular solid has edge lengths 20,30 and L. If the cube and the rectangular solid have equal surface areas, what is the value of L?
Answer Choices
A. 15
B. 21
C. 42
D. 40
E. 96