in a garden , there are 10 rows and 12 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 . what is the length of the garden ?
"explanation : between the 12 mango trees , there are 11 gaps and each gap has 2 meter length also , 1 meter is left from all sides of the boundary of the garden . hence , length of the garden = ( 11 × 2 ) + 1 + 1 = 24 meter answer : d"
add(add(multiply(subtract(12, const_1), 2), divide(10, 2)), divide(10, 2))