Question

In a rectangular plot of land 70 m long and 40 m broad, a circular garden of radius 17.5 m developed. Find the cost of turfing the remaining portion at the rate of ₹ 28.50 per meter.

square A Wire when bent in the form of square, encloses an area of 146.41 cm². If this wire is strangthened and then bent to form a circle, what will be the area of the circle so formed.

Answer 1

1st question:

Area of the plot = 70×40 = 2800 m^2
area of circular gardan = π(17.5)^2 = 962.11 m^2
hence,
the remaining area=2800-962.11=1837.88 m^2
so the cost of turfing = 1837.88×28.50
=Rs 52379.78
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2nd question:

sides of square formed by wire = √146.41
= 12.1 m
so, total length of wire = 4×12.1 =48.4m
now, form a circle
perimeter of the circle = total length of wire
=> 2πr = 48.4
=>radius = 48.4/2π = 24.2/π =7.703 m
hence area of the circle = π(7.703)^2
=186.41 m^2
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I hope this helps you.....

Answer 2

Answer:

hope this will help you

Step-by-step explanation:

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