which number should replace both the asterisks in ( * / 20 ) x ( * / 80 ) = 1 ?
"let ( y / 20 ) x ( y / 80 ) = 1 y ^ 2 = 20 x 80 = 20 x 20 x 4 y = ( 20 x 2 ) = 40 the answer is b ."
sqrt(multiply(80, 20))