Question

if suman running in a rectangular park whose length is 3times of its breadth find the distance covered by suman if he run thrice on the park? And the area of the rectangular park is 300sq.cm

Answer 1

Hello Friend !!!

Let, the breadth be x.
Then, length = 3x 
ATQ, Area of the park = 300cm^2
 
⇒ 3x^2 = 300
⇒ x^2 = 100
⇒ x = 10cm


So, breadth of the park = 10cm
⇒ length = 30cm
Perimeter of the park = 2 ( 10 + 30 )
                                   = 2 x 40 = 80cm
Distance covered by Suman if he/she runs thrice on the boundary of the park = 3 x 80 
= 240cm ( Ans )



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Answer 2

Let its b=x then l=3x
Area=l×b
300=x×3x
300=3x^2
100=x^2
X=10
B=10
L=30
3×2(l+b)
6×40
240cm