Question

a goat is tied with a rope 21m long to a pole. how much area will she graze

Answer 1

here,r=21

area of circle=

$\pi \times {r}^{2}$

=22/7×21×21

=1386sqm

Answer 2

πr²

22/7×21/2×21/2( because 21 m is diameter)

=346.5m²