N and P are two rectangular containers. The base area of N is 72 cm
2 while that of P is 34 cm
2 . At first, N contained water to a height of 54 cm and P was empty, as shown.
- What was the volume of the water in N at first?
- Brandon then poured some water from N to P. After that, the height of the water level in N was thrice that in P. What was the new height of the water level in N?
(a)
Volume of water in N
= 72 x 54
= 3888 cm
3 (b)
Total base areas
= 72 x 3 + 34
= 250 cm
2 Height of water if the total base area is 250 cm
2 = 3888 ÷ 250
= 15.552 cm
New height of the water level in N
= 15.552 x 3
= 46.656 cm
Answer(s): (a) 3888 cm
3; (b) 46.656 cm