Question

2 cubes each of volume
$64m {?}^{2}$
are joined end to end. Find the total surface area of resulting cub​

Answer 1

Step-by-step explanation:

Step-by-step explanation:

VOLUME OF EACH CUBES=64m³

SIDE OF EACH CUBE=

=$</em></strong><strong><em>\sqrt[3]{64}$

=. 4m

WHEN THEY ARE JOINED

THE RESULTING CUBOID HAS SAME HEIGHT AS OF CUBE

IT HAS SAME BREADTH WITH SIDE OF CUBE

BUT THE LENGTH OF CUBOID IS INCREASED AND ITS THE DOUBLE OF THE SIDE OF CUBE

SO IN RESULTING CUBOID

LENGTH=4+4=8m

BREADTH=4m

HEIGHT=4m

TOTAL SURFACE AREA OF CUBOID=2(LB+BH+LH)

=2[(8×4)+(4×4)+(8×4)]

=2[32+16+32]

=2×80

=160m²