a rectangular tank 25 cm long and 20 cm wide contains water to a depth of 5 cm a - Maths - Surface Areas and Volumes

Question

a rectangular tank 25 cm long and 20 cm wide contains water to a
depth of 5 cm a metal cube of side 8cmis placed in tank so that one
face of cube rests at the bottom of tank find how many litres of
wate must be poured in to tank so as to just cover the cube

Gursheen kaur. · Accepted Answer

Volume of water present in tank = 25 * 20 * 5
=2500cm^3

when

a metal cube of side 8cmis placed in
tank , then volume of water displaced =
8*8*5=320cm^3

25*20*h=2500*8*8*5

h = 64*5*5

h = 1600cm

now, [(20*25)-(8*8)
]*h=320

(500-64)h=320

h = 320/436

h=0 733

a rectangular tank 25 cm long and 20 cm wide contains water to a depth of 5 cm. a metal cube of side 8cmis placed in tank so that one face of cube rests at the bottom of tank. find how many litres of wate must be poured in to tank so as to just cover the cube.