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.
2j +2h =30. That is the equation
2(8) + 2h = 30
16+ 2h =30
Subtract 16 from both sides
2h = 14
H=7
Answer:
Yes I agree with Andre's method he did it the correct way
Step-by-step explanation:
0.87 because you will need to cross mulitiply and then divide.
Answer:
Because the problem says - they are AT LEAST...
You would need to list the answers this way
GrandD is < or = to 5 GrandS is greater or = to 7
Step-by-step explanation:
These are so fun!
Let GrandD = X
Let GrandS = X + 2 (because he is two years older than GrandD)
Their age together is 12 years - so...
GrandD + GrandS = 12 OR...
x + x + 2 = 12
Now solve for x.
2x + 2 = 12
2x = 10 (because we subtract the ones on the left from the ones on the right)
x = 5 (because we divide both sides by 2)
This means that GrandD (x) is equal or greater than 5 years old
And GrandS (x + 2) = or greater than 7 years old
