Question

2 cubes of edge 5 cm each are joined end to end, then find the surface area of resulting cuboid.
Select one:
a. 250cm2
b. 125 cm2
c. 225 cm2
d. none​

Answer 1

Answer:

250 cm sq.

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Step-by-step explanation:

Given,

Edge of the cube =5 cm

After joining two cubes,

Total length, l=5+5=10cm

Breadth, b=5cm and

Height, h=5cm

∴ Surface Area =2(lb+bh+lh)

=2(10×5+5×5+5×10)

=2×125

=250cm

2

Hence, the surface area of the resulting cuboid is 250 cm sq.

Answer 2

Answer:

2 cubes of edge 5 cm

2 cubes are join together to form a cuboid of

length = 10 cm

breath =5 cm

height = 5 cm

surface area of cuboid = 2(lb+bh+hl)

= 2(10×5+5×5+5×10)

=2(50+25+50)

=2(125)

= 250 cm^2