Tank R is a cubical tank of side 14 cm. It is
78 filled with water. The water is then poured into Tank S measuring 20 cm by 18 cm by 15 cm.
- Find the volume of water in Tank R at first.
- How much more water is needed to fill Tank S to the brim? Give your answer in litres.
(a)
Volume of water in Tank R
=
78 x 14 x 14 x 14
= 2401 cm
3 (b)
Volume of Tank S
= 20 x 18 x 15
= 5400 cm
3 Volume of water needed to fill Tank S to the brim
= 5400 - 2401
= 2999 cm
3 2999 mℓ = 2.999 ℓ
Answer(s): (a) 2401 cm
3; (b) 2.999 ℓ