Question

Quanto é a/4 . a/4 = 16 ?

Answer 1

a . a = 16
4   4

a² = 16
16

a² = 16.16
a² = 16²
a = 16

Answer 2

$\frac{a}{4}$.$\frac{a}{4}=16$
$\frac{ a^{2} }{16}$
a²=16.16
a²=256
a=$\sqrt{256}$
a=16