Question

urgent please ...........will mark u as brainliest .....
please give clear answer with steps and explanation........plz......
A metal cuboid of dimensions 6 cm * 8 cm * 11 cm is melted and converted into a cube what is the minimum amount of metal that has to be added or removed?

Answer 1

HEY .....

DIMENSIONS ARE
6CM
8CM
11CM

WE have to find its surface area ....
that is ......

=2(LB+BH+LH)

=2(6*8+8*11+6*11)

=2(202)

=404

MEANS WE HAVE TOTAL METAL AREA AS 404SQCM

NOW WE HAVE TO FIND A SURFACE AREA OF CUBE WHICH CAN BE FIT IN THIS AREA

SURFACE AREA OF CUBE
= 6*SIDE^2

IF WE ASSUME THE SIDE AS 8

THE AREA WILL BE
=6*8*8
=384

AND IF 9
THEN
=6*9*9
=486

SO THE MINIMUM FROM 404 IS 384SQCM

SO WE HAVE TO MINIMIZE THE METAL BY 404-384=20SQCM IS THE ANS.

I HOPE IT WILL HELP U....

IF YES THEN PLZ MARK AS BRAINLIEST.....☺







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