Question
The perimeter of a rectangular swimming pool is 64 m. If its length and breadth are in the ratio of 5 : 3, then find the length of the pool (in metre).
Answer: Option B
:
B
Perimeter of swimming pool =64(Given)
Perimeter of rectangle =2(length+breadth)
Since length and breadth are given to be in the ratio 5:3, we can assume them to be 5x and 3x respectively.
⇒ Length = 5x andbreadth = 3x
Substituting these in the formula of perimeter, we get
64=2(5x+3x)⇒8x=32⇒x=4
∴ Length of the swimming pool
=5x=5×4=20m
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:
B
Perimeter of swimming pool =64(Given)
Perimeter of rectangle =2(length+breadth)
Since length and breadth are given to be in the ratio 5:3, we can assume them to be 5x and 3x respectively.
⇒ Length = 5x andbreadth = 3x
Substituting these in the formula of perimeter, we get
64=2(5x+3x)⇒8x=32⇒x=4
∴ Length of the swimming pool
=5x=5×4=20m
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