A field is 90 metre long and 50 metre broad. A 25 metre long, 20 metre broad and 4 metre deep tank dug in the field and the earth taken out is spread evenly over the remaining field. How much the level of field will rise?	Choices.
A) 0.5 metre B) 0.3 metre C) 0.8 metre D) 0.6 metre E) 0.7 metre
0.5 metrerea of field = 90 x 50 = 4500 m2   0.5 metrerea of field dug out = 25 x 20 = 500 m2   Therefore, 0.5 metrerea of remaining field = 4500 m2 - 500 m2 = 4000 m2   Volume of the earth dug out = 25 x 20 x 4 = 2000 m3   Therefore, Field will rise by   2000/4000= 
<gadget id="calculator">  2000/4000</gadget>
<output>1/2 = around 0.5</output>
0.5 metre   0.5 metrenswer 0.5 metre
<result>A</result>
A field is 90 metre long and 50 metre broad. A 25 metre long, 20 metre broad and 4 metre deep tank dug in the field and the earth taken out is spread evenly over the remaining field. How much the level of field will rise?