What is the edge of a cube whose volume is equal to the sum of the volumes of the cubes of edge 6 cm, 8 cm and 10 cm?
Answer & explanation
Correct answer: option 4
Let the edge of new cube = s cm.
Volume of the new cube = Sum of the volumes of all the three smaller cubes
= s3 = 63 + 83 + 103
= s3 = 216 + 512 + 1000
= s3 = 1728
= s3 = 123
= s = 12 cm