Asked by Roshan
Three cubes of volume 343 cubic cm are joined end to end.find surface area and volume of the resulting cuboid.
Answers
Answered by
Steve
since 343=7^3 the cubes are 7 cm on a side
By joining them, 4 faces are hidden. Each cube has 6 faces.
So, the remaining surface area is 3*(6*7^2)-4*7^2 = 686 cm^2
By joining them, 4 faces are hidden. Each cube has 6 faces.
So, the remaining surface area is 3*(6*7^2)-4*7^2 = 686 cm^2
Answered by
Reiny
Well, the volume is simply 3 times one of the cubes.
For the surface area, think of what you would see.
Wouldn't 4 faces not be visible ?
For the surface area, think of what you would see.
Wouldn't 4 faces not be visible ?