In a garden , there are 10 rows and 12 columns of mango trees. the distance between the two trees is 2 m and a distance of one meter is left from all sides of the boundary of the length of the garden is :  Pick one.
A) 450 sq mtrs
B) 460 sq mtrs
C) 480 sq mtrs
D) 490 sq mtrs
E) 470 sq mtrs
length of garden = 1+2*11+1= 
<gadget id="calculator">1+2*11+1</gadget>
<output>24</output>
24 m   breadth of garden= 1+9*2+1= 
<gadget id="calculator">1+9*2+1</gadget>
<output>20</output>
20 m   area= 24*20= 
<gadget id="calculator">24*20</gadget>
<output>480</output>
480 sq mtrs   ANSWER:480 sq mtrs
<result>C</result>
In a garden , there are 10 rows and 12 columns of mango trees. the distance between the two trees is 2 m and a distance of one meter is left from all sides of the boundary of the length of the garden is :