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Q.

If the perimeter of base of a cube is 14 cm and its height is 3.5 cm, then its lateral surface area is

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a

49

c m 2

 

b

56

c m 2

  

c

36

c m 2

 

d

42

c m 2

 

answer is C.

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Detailed Solution

 

Perimeter of base of cube

p =14cm

height  h =3.5cm

L.S.A. (1)

=p×h

=14×3.5

=49c m 2

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