Question

find the cost of building a boundary wall around a rectangular plot 100m long and 40 m 75cm wide at the rate of rupees 23 per metre.A 2.5 m long stretch is left on one of the longer sides for entrance.

Answer 1

Answer:

6417 Rs

Step-by-step explanation:

It is given that:

• Length of wall = 100 m
• Width of wall = 40.75 m
• Cost per meter = 23 Rs
• 2.5 meters are left for entrance

The perimeter of the rectangle = 2(Length + Width)

= 2(100+40.75) = 281.5 meters

Therefore, the cost = 23*281.5 = 6474.5 Rs

However, 2.5 meters are left for entrance. Therefore, the cost of the 2.5 meters = 23*2.5 = 57.5 Rs

Therefore, the final cost will be 6474.5 - 57.5 = 6417 Rs

Answer 2

P=2(l+b)

2(100+40.75)

2×140.75

281.5m

281.5-2.5=279m

279×23=₹6417

Ans=So, cost of building a boundary wall around a rectangular plot is ₹6417

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