A boy is standing in one corner of a square ground of side 90m.He can throw a stone upto maximum 70m. Find the area in which that boy can throw that stone in that ground?  Select
A) 2850 B) 3150 C) 3250 D) 3450 E) 3850
Area covered by stone = Pi*r^2/4 ( here we divide by 4 because the boy is standing in the corner of the ground and only 1/4 part of the ground , the stone can reach)   where r= 70 m = length of throw   So area = (22/7)*70*70/4= 
<gadget id="calculator">(22/7)*70*70/4</gadget>
<output>3_850</output>
3850 sq m   answer :3850
<result>E</result>
A boy is standing in one corner of a square ground of side 90m.He can throw a stone upto maximum 70m. Find the area in which that boy can throw that stone in that ground?