the diameter of a circular field is 70 cm. the owner wants to fence the field and plough it for cultivation. find his total cost if fencing costs him Rs = 300 per meter and ploughing costs Rs 2 per square
Answer is 73,700 please send me solution
Answers
Explanation:
The total cost of fencing is Rs 66000 and the cost of ploughing is Rs 7700 .
Explanation:
Given : The diameter of a circular field is 70 m.
i.e. radius = 35 m (Radius is half of diameter)
Circumference of circular field = \pi\times diameterπ×diameter
=(\dfrac{22}{7})\times70=220\ m(
7
22
)×70=220 m
Rate of fencing = Rs 300 per metre
Total cost of fencing costs him = (Rate of fencing)x (Circumference of circular field )
= (300) x(220) = Rs 66000
Area of circular field = \pi (radius)^2π(radius)
2
=\dfrac{22}{7}\times(35)^2=3850\ \text{square meter}=
7
22
×(35)
2
=3850 square meter
Rate of ploughing = Rs 2 per square metre
Total Cost of ploughing = (Rate of ploughing ) x (Area of circular field)
= 2 x 3850 = Rs 7700
Hence, the total cost of fencing is Rs 66000 and the cost of ploughing is Rs 7700 .
HOPE IT HELPS