mr . loyd wants to fence his square shaped land of 60 sqft each side . if a pole is laid every 12 ft how many poles do he need ?
"if each side is 120 feet . . then total perimeter is 60 * 4 = 240 poles every 12 feet hence no of poles = 240 / 12 = 20 answer : a"
divide(divide(multiply(60, const_4), const_10), const_2)