The radius of a circular field is 20 meters. The total cost of building that wall is Rs 1,400 per 20 meters. It costs Rs 5 per square meter to cultivate that farm, so find the total cost of cultivating the farm
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Answer:
550m²
Step-by-step explanation:
Radius of a circular field = 20m
As we know the area of the circle is given by the formula =>πr²
So the area of circle=(22/7)(20) ²
=(22/7) (400)
=1257.14m²
If the width of path is 5m, then the radius of circle when we remove the path=(20-5) m
=15
Area of circle without path
=(22/7) (15) ²
=(22/7) (225)
=707.1414m²
So, the area of will be
Area of whole circle-Area of circle without path
=1257.14 - 707.14
=550m²
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