In a garden, there are 10 rows and 15 columns of mango trees. The distance between the two trees is 2 metres and a distance of one metre is left from all sides of the boundary of the garden. The length of the garden is
Choose the correct choice from the following options
A) 20 m
B) 30 m
C) 24 m
D) 26 m
E) 28 m
Explanation:   Each row contains 15 plants.   There are 14 gapes between the two corner trees (14 x 2) metres and 1 metre on each side is left.   Therefore Length = (28 + 2)= 
<gadget id="calculator">(28 + 2)</gadget>
<output>30</output>
30 m.   Answer: 30 m
<result>B</result>
In a garden, there are 10 rows and 15 columns of mango trees. The distance between the two trees is 2 metres and a distance of one metre is left from all sides of the boundary of the garden. The length of the garden is