Question

5. The volume of cubs is a cm square if and L,B,H are each x 2 find the new volume .
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Answer 1

Answer:

Let the common factor be x

Length =2x

Breadth =3x

Height =4x

Surface area of cuboid is 2(hl+lb+bh)=208

2((2x)(3x)+(3x)(4x)+(2x)(4x))=208

6x

2

+12x

2

+8x

2

=104

26x

2

=104

x

2

=4

x=2

length =2(2)=4cm

Breadth =3(2)=6cm

Height 4(2)=8cm

Volume lbh=4(6)(8)=24×8=192cm

3

Answer 2

l=2(2) =4

b=3(2) =6

h=4(2) =8

lbh=4*6*8=24*8

192cm