<span> 2(lh + lw + wh) = 96
lh + lw + wh = 48
l(h + w) + wh = 48
3(3 + 4) + 12
Length = 3
Width = 3
Height = 4
</span>
The last one is incorrect. The correct answer is division. They divided 9 on both sides.
Answer:
57
Step-by-step explanation:
The volume of a cone is given by the formula ...
V = (1/3)πr²h
For a pile with a radius of 8.5 m and a height of 9 m, the volume is ...
V = (1/3)π(8.5 m)²(9 m) = 216.75π m³ ≈ 680.94 m³
Then the number of truckloads required to create that size pile will be ...
(680.94 m³)/(12 m³/truck) = 56.745 trucks
Even a partial truck load entails another trip, so ...
57 truck loads of sand are needed.
P = 2a + 3b + 4c
4c = P - 2a - 3b
c = (P - 2a - 3b)/4
