Question

Three solid cubes of edges 6cm, 10cm and x cm are melted to form a single cube of edge 12cm, find the value
of x.

Answer 1

Answer:

Step-by-step explanation:

Volume of 1 cube = 6*6*6=216

Volume of 2 cube=10*10*10=1000

Volume of 3 cube = x*x*x

Volume of newly formed cube =12*12*12 = 1728

Sum of volume of three cubes = volume of newly formed cube

I.e 216+1000+x*x*x = 1728

x*x*x =1728-1216 = 512

Therefore x*x*x = 512

So, x = 8cm

Hope this would help you...