C and D are two rectangular tanks. The base area of C is 100 cm
2 while that of D is 40 cm
2 . At first, C contained water to a height of 36 cm and D was empty, as shown.
- What was the volume of the water in C at first?
- Liam then poured some water from C to D. After that, the height of the water level in C was twice that in D. What was the new height of the water level in C?
(a)
Volume of water in C
= 100 x 36
= 3600 cm
3 (b)
Total base areas
= 100 + 100 + 40
= 240 cm
2 Height of water if the total base area is 240 cm
2 = 3600 ÷ 240
= 15 cm
New height of the water level in C
= 15 x 2
= 30 cm
Answer(s): (a) 3600 cm
3; (b) 30 cm