A horse is tied to one corner of a square playground of side 20m by a rope 3.5m long. Find the area it can move in that playground?	Choose one.
A) 9.625  B) 10.5  C) 11.125  D) 12.5  E) 14.45
9.625rea covered by horse = Pi*r^2/4 ( here we divide by 4 because rope is tied at the corner of the playground and only 1/4 part , the horse can move in that playground.)   where r= 3.5 m = length of rope   So area = (22/7)*3.5*3.5/4= 
<gadget id="calculator">(22/7)*3.5*3.5/4</gadget>
<output>9.625</output>
9.625 sq m   answer :9.625
<result>A</result>
A horse is tied to one corner of a square playground of side 20m by a rope 3.5m long. Find the area it can move in that playground?