three cubes each of side 7 cm are joined end to end find the total surface area of the resulting cuboid
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Answered by
43
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1980ayaz:
thankssssssssssssss
my pleasure
can u pls ans one more question I have
tell me here only
the area of a quadrilateral is 320 m square the perpendicular from two vertex to the diagonal are 12 m and 8 M what is the length of this diagonal
post it answer will be ready
32 m is the answer.
ok
yes
ans is 32 m
Answered by
26
Answer: 686 cm^2
Step-by-step explanation:
When 3 cubes are joined end to end, the length becomes 3(7 cm)=21 cm.
So, the dimensions are: length=21 cm; breadth=7 cm; height=7 cm.
Total surface area= 2(lb+bh+lh)
=2[(21 cm*7 cm)+(7 cm*7 cm)+(21 cm*7 cm)
=2[(147 cm^2 + 49 cm^2 + 147 cm^2)]
=2[343 cm^2]
=686 cm^2
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