Question

Find the area of a path 2m wide laid inside along the boundary of a
rectangular park of dimension 100m X 60 m. Find the cost of gravelling it at the rate of Rs30 per square meters.

Answer 1

Answer:

Length = 60m. Breadth = 40m. width = 2 m. So, by using formula of area of rectangle. Area of rectangle = length × breadth. ...

Length of inner rectangle = 60 - 2(2) = 56m. Breadth of inner rectangle = 40-2(2) = 36m. hence , Area of path = (60×40) - (56×36) = 2400 - 2016 = 384m² Now, cost of gravelling is = Rs. 11 / m²

Step-by-step explanation:

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Answer 2

Answer:

$we \: have \: given.$

$length = 60 \: m$

$breadth = 40 \: m$

$area \: of \: rectangle = l \times b$

$area \: of \: path = area \: of \: outer \: rectangle - area \: of \: inner \: rectangle$

$= length \: of \: inner \: rectangle \: = actual \: length \: - 2(width \: of \: path)$

$length \: of \: inner \: reactangle \: = 60 - 2 \: (2) = 56 \: m$

$breadth \: of \: inner \: rectangle \: = 40 - 2 \: (2) = 36 \: m$

$hence.area \: of \: path = (60 \times 40) - (56 \times 36)$

$= 2400 - 2016 = 384 \: {m}^{2}$

$rs = 11 \: {m}^{2}$

$384 \times 11 = 4224$