G and H are two rectangular tanks. The base area of G is 78 cm
2 while that of H is 44 cm
2 . At first, G contained water to a height of 36 cm and H was empty, as shown.
- What was the volume of the water in G at first?
- Owen then poured some water from G to H. After that, the height of the water level in G was twice that in H. What was the new height of the water level in G?
(a)
Volume of water in G
= 78 x 36
= 2808 cm
3 (b)
Total base areas
= 78 + 78 + 44
= 200 cm
2 Height of water if the total base area is 200 cm
2 = 2808 ÷ 200
= 14.04 cm
New height of the water level in G
= 14.04 x 2
= 28.08 cm
Answer(s): (a) 2808 cm
3; (b) 28.08 cm