Question

Find the cost of fencing a circular field at the rate of 50p. m, if its area is 138600 m2 .​

Answer 1

Answer:

area of circular field = 138600sq. meter

pi r sq =138600

r = 138600×7/22 root under

=44100 root under

=210meter

circumference =2pi r

=2×pi ×210

=2×22×30

=1320meter

total cost =1320×50p

=66000p

660rupee

Answer 2

Answer:

$area of circular field = 138600sq. meter$

$\pi {r}^{2} = 138600$

$r = \sqrt{138600 \times \frac{22}{7} }$

$\sqrt{44100}$

$= 200m$

$circumference = 2\pi \: r$

$2\pi \times 210$

$=2×22×30$

$=1320meter$

$total cost =1320×50p</p><p></p><p>=66000p</p><p></p><p>$

$hope \: it \: will \: help \: you....$