mohon bantuan jawaban soal no 4

(4x 1/100)^1/2 x (4x1/10)^1/2 x a^1/2 = (4x 1/10) x(4x 1/100) x b^1/2

(4x 1/100) x (4x1/10) x a = (4x 1/10)^2  x (4x 1/100)^2  x b


a/b=((4x 1/10)^2  x (4x 1/100)^2 ) / (4x 1/100) x (4x1/10)
a/b= (16/100 x  16/10000 )  /  (16 x 1/1000)
a/b= 16/1000=0.016