Z and A are two rectangular tanks. The base area of Z is 71 cm
2 while that of A is 37 cm
2 . At first, Z contained water to a height of 30 cm and A was empty, as shown.
- What was the volume of the water in Z at first?
- Reggie then poured some water from Z to A. After that, the height of the water level in Z was thrice that in A. What was the new height of the water level in Z?
(a)
Volume of water in Z
= 71 x 30
= 2130 cm
3 (b)
Total base areas
= 71 x 3 + 37
= 250 cm
2 Height of water if the total base area is 250 cm
2 = 2130 ÷ 250
= 8.52 cm
New height of the water level in Z
= 8.52 x 3
= 25.56 cm
Answer(s): (a) 2130 cm
3; (b) 25.56 cm