H and J are two rectangular tanks. The base area of H is 92 cm
2 while that of J is 46 cm
2 . At first, H contained water to a height of 50 cm and J was empty, as shown.
- What was the volume of the water in H at first?
- Harry then poured some water from H to J. After that, the height of the water level in H was twice that in J. What was the new height of the water level in H?
(a)
Volume of water in H
= 92 x 50
= 4600 cm
3 (b)
Total base areas
= 92 + 92 + 46
= 230 cm
2 Height of water if the total base area is 230 cm
2 = 4600 ÷ 230
= 20 cm
New height of the water level in H
= 20 x 2
= 40 cm
Answer(s): (a) 4600 cm
3; (b) 40 cm