Question

find the perimeter of quater of circle whose radius is 10.5

Answer 1

perimeter of circle equal to 2πr
$2 \times 22 \: by \: 7 \: \times 21 \: by \: 2$
66 centimetre is the perimeter of circle
66/4+10.5+10.5 is equal to quadrant perimeter of circle
33/2 +21
16.5 +21
37.5 centimetre is the perimeter of circle