Q. 13

# Three cubes whose edges measure 3 cm, 4 cm, and 5 cm respectively are melted to form a new cube. Find the surface area of the new cube formed.

Given,

Edge of three cubes are respectively = 3cm , 4 cm , 5 cm

So,

Sum of volume of these cubes =

After melted these cubes a new cube is formed.

Let edge length of this new cube = a cm

So,

=

=

Edge of new cube = 6 cm

Surface area of new cube =

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Quiz | Practice More Questions on Cube and Cube Roots27 mins
Champ Quiz | Cube and Cube Roots46 mins
Quiz | Cubes and Cube Roots41 mins
Champ Quiz | Cubes and Cube Roots33 mins
NCERT | Imp. Qs. on Cubes and Cube Roots47 mins
Quiz | Cubes and Cube Roots41 mins
Quiz | Solve Imp. Qs. of Cube and Cube Roots39 mins
The History and Chemistry Behind a Matchstick!37 mins
Lets Make a Timetable and Crack Olympiad40 mins
Champ Quiz | Square Roots and Cube roots40 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses