a man walked diagonally across a square lot . approximately , what was the percent saved by not walking along the edges ?
let the side of the square ( abcd ) be x metres . then , ab + bc = 2 x metres . ac = 2 x = ( 1.41 x ) m . saving on 2 x metres = ( 0.59 x ) m . saving % = ( 0.59 x ) / 2 x x 100 % = 30 % ( approx . ) b )
divide(multiply(subtract(add(power(const_1, const_2), power(const_1, const_2)), sqrt(add(power(const_1, const_2), power(const_1, const_2)))), const_100), add(power(const_1, const_2), power(const_1, const_2)))