Question

three metal cubes whose edges are 9 cm, 12 cm and 15 CM are melted together and formed into one cube find the edge of the new cube formed.​

Answer 1

Answer:

x^3=9^3+12^3+15^3

x^3 =729+1728+3375

x^3 =5832

x =cube root of 5832

x = 18 cm

so the edge of new cube is 18 CM.