Question

two cubes of volume 64 cm each are joined find newly formed cuboid surface area​

Answer 1

Answer:

Given:

⇒Volume of cubes = 64 cm

3

⇒(Edge)

3

=64

⇒Edge =4 cm

If cubes are joined end to end, the dimensions of the resulting cuboid will be

4 cm, 4 cm, 8 cm.

Surface area of cuboids =2(lb+bh+lh)

=2(4×4+4×8+4×8)

=2(16+32+32)

=2(16+64)

=2(80)=160 cm

2

Answer 2

Step-by-step explanation:

Volume of cube = 64 cu.cm

Value of each side = 3√64

= 4cm

If they both are joined together, the length of resulting cuboid will get doubled , Therefore the Total surface area of cuboid = 2(lb+bh+lh)

(l is length , b is width , h is height)

Total surface area of this cuboid is =

2(4×8+4×4+4×8)

=2(32+16+32)

=2×80

=160sq.cm