Question

two cubes each of side 3cm are joined end to end.the surface area of resulting cuboid ​

Answer 1

Answer:

70 cubic centimeters

Step-by-step explanation:

If we join two cubes we would get

L=6cm

H=3cm

B=3cm

Total surface area of a =2(LB+BH+LH)

Cuboid

=2(6 x 3 + 3 x 3 + 6 x 3)

=2(18+9+18)

=2 x 35

=70 cubic centimeters

Answer 2

l=2(3)=6cm

b=3cm

h=3cm

TSA of cuboid is 2(lb+bh+hl)

so by substituting

we get 2(3*6+3*3+6*3)

=90sqcm