Question

if three cubes of side a are joined consecutively then find the volume and total surface area of cube so obtained please give right answer request ​

Answer 1

Answer:

ANSWER

Given, three cube are placed adjacent in a row to form a cuboid.

Let the side of cube be a, three cube placed in row then breadth of cuboid be a, length of cuboid is 3a, height of cuboid is a.

Sum of total surface area of three cubes =6a

2

+6a

2

+6a

2

=18a

2

Total surface area of resulting cuboid =2(lb+bh+lh)

=2(3a×a+a×a+3a×a)

=2(7a

2

)

=14a

2

Ratio of total surface area of cuboid to that of cube =

18a

2

14a

2

=

9

7

=7:9

Answer 2

Answer:

R.E.F image 

Area of cuboid (room) =2bh+2hl

=(2×20)+(2×24)

=88m2

Area of paper =lb

=l×0.5m

=0.5lm2

Area of cuboid = Area of paper 

88=0.5l⇒l=176m 

Step-by-step explanation:

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