r = 2 cm
\(\therefore\) volume of 1 sphere = \(\frac43\)πr3 = \(\frac43\)π x 23 = \(\frac{32\pi}3\) cm3
\(\therefore\) volume of 16 spheres = 16 x \(\frac{32}3\)π cm3 = \(\frac{512\pi}3\) cm3
Dimensions of cuboidal box are 16 cm, 8 cm and 8 cm.
\(\therefore\) volume of cuboid = lbb = 16 x 8 x 8 = 1024 cm3
volume of water in box = volume of box - volume of 16 spheres
= (1024 - \(\frac{512\pi}3\)) cm3
= (1024 - 536.16) cm3
= 487.84 cm3