Answer:
0.75m
Step-by-step explanation:
The volume of a prism is:
the area of the cross section × length
In this case the cross section is the circle so the formula is
v = πr²h
volume = 21m³
height or length = 12m
Sub in the values:
21 = πr² × 12
1.75 = πr² (I divided both sides by 12)
0.5570423008 = r² (I divided both sides by π)
r = 0.74635... (I square rooted both sides)
r ≈ 0.75m (to 2 d.p)
Radical 7
radical 84=2 radical 21
radical 21 divided by 2 radical 3 is radical 7
Answer 64
Step by step exploration
3*4*4+4*4=48+16=64
Answer:
x+y= the #of trees
75+85=the amount of money
Step-by-step explanation:
1. We have to solve for 5 surface faces.
2. Triangle Area Formula=base x height / 2
3. We get 60 as the area when u plug the numbers into the formula.
4. Since there is another triangle in the back it’s also 60 so then it’s 120.
5. Then we do length times width for the two rectangles.
6. When completing the equation you get 130.
7. Since you have another rectangle the same length you add another 130 making it 260.
8. Lastly, the base same thing length times width.
9. The answer for that is 240.
10. Now u add everything 240+260+120=620.
ANSWER:620 cm^2