Question

There is a circular waterbed of radius 5m inside a rectangular park of length 15m and breadth 12m.Find the area of the park excluding the waterbed and also find the cost of fencing the water bed at the rate of ₹60 per m. (Take π=3.14

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Answer 1

Answer:

101.5 m²  &  ₹1884

Step-by-step explanation:

Let's find the area of rectangle:

• S=ab= 15m*12m= 180m²

• Area of waterbed= πr²= 3.14*5²= 78.5 m²

Area excluding waterbed = 180 m² - 78.5 m²= 101.5 m²

Now lets find the lenght of the fence:

• It is equal to 2πr= 2*3.14*5=31.4 m

Cost of fencing = 31.4*₹60= ₹1884

The answer is : 1. 101.5 m², 2. ₹1884