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The question is :—
a rectangular park is surrounded by a path which is 2.5 m wide . if the length and rectangular park are 20m and 15m respectively, find the area of the path.
Solution :-
to find the path--
Area of small rect = 15×20
= 300m²
here we get the inner side area as 300m² now to find the outer rectangle
observe that 2.5 m is the path
so
for area of outer side
l=20+2.5+2.5
=25 is the length for outer rectangle
b= 15+2.5+2.5
=20. is the breadth for outer rectangle
now we have both L and B
so-
Area of big rec= 25×20
= 500m²
area of path = area of big rect - area of small rect
area of path = 500-300
= 200m²
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