180 is the speed of the motorboat. I don't know the speed of the current.
........................................
120÷4=30
30×6=180
Answer:
Volume of the frustum = ⅓πh(4R² - r²)
Step-by-step explanation:
We are to determine the volume of the frustum.
Find attached the diagram obtained from the given information.
Let height of small cone = h
height of the large cone = H
The height of a small cone is a quarter of the height of the large cone:
h = ¼×H
H = 4h
Volume of the frustum = volume of the large cone - volume of small cone
volume of the large cone = ⅓πR²H
= ⅓πR²(4h) = 4/3 ×π×R²h
volume of small cone = ⅓πr²h
Volume of the frustum = 4/3 ×π×R²h - ⅓πr²h
Volume of the frustum = ⅓(4π×R²h - πr²h)
Volume of the frustum = ⅓πh(4R² - r²)
Answer:
<h2>Cost to rant each chair = $2.25 and each table = $6.25</h2>
Step-by-step explanation:
Let the rent one chair is C and the rent for one table is T.
As per the given condition,
= 30................(1)
= 42................(2)
Multiplying the equation (1) with 2 and (2) with 5, then subtracting, we get = 210 - 60
= 150
T =
T = 6.25
Putting the value of T in equation (1) we get,
= 30
= 30 - 3 \times6.25[/tex]
= 11.25
C =
C = 2.25
Step-by-step explanation:
(3 + 4) 9 + 3 = (7)9 +3
= 63 + 3
= 66