Question

Two cubes , each of volume
512 cm3 are joined end to end
Find the surface area of the
resulting cuboid,​

Answer 1

Answer:

640cm^2

Step-by-step explanation:

Volume of each cube = 512cm^3

Side of each cube = 3√512cm^3

Side of each cube = 8cm

A/q, Two cubes of sides 8cm are joined to form one cuboid

Therefore, length of resulting cuboid = 8+8 = 16cm

Breadth of cuboid = 8cm

Height of cuboid = 8cm

T.S.A of cuboid = 2(lb+bh+lh) cm^2

T.S.A = 2(16x8+8x8+16x8)cm^2

T.S.A = 640 cm^2

Answer 2

Answer:

Volume of Cube =512cm3

lcube = 512 cube

L= 8 cm

Step-by-step explanation:

now the two cubes are joined together so

L=8+8 =16

H=8

B=8

TSA= 2(LB+BH+HL)

=2(16×8+8×8+8×16)