Q: 140 (IAS/1997)
question_subject:
Maths
question_exam:
IAS
stats:
0,8,4,1,1,2,8
keywords:
{'surface area': [0, 2, 1, 0], 'cube': [0, 0, 2, 0], 'measurement': [0, 1, 1, 3], 'volume': [0, 0, 1, 0], 'length': [0, 0, 1, 0], 'edge': [0, 1, 1, 0], 'number': [0, 0, 0, 2], 'unit': [0, 1, 5, 10]}
In a cube, the volume is given by the cube of the edge length (e^3) and the surface area is given by six times the square of the edge length (6e^2). If these two values are equal, it means e^3 = 6e^2. Simplifying this, we get e = 6.
However, option 4 suggests that the correct answer is 4, which is incorrect.
Alert - correct answer should be 6.