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Anit [1.1K]
4 years ago
9

Geometry hw help (9)

Mathematics
1 answer:
Simora [160]4 years ago
4 0
Answer: 18 cm

==============================================

Explanation:

The volume of a sphere is found by this formula
V = (4/3)*pi*r^3

We are given the volume is V = 972pi and we need to find r

Plug in that value for V and solve for r
V = (4/3)*pi*r^3
972pi = (4/3)*pi*r^3
972 = (4/3)*r^3 ... the pi's cancel out (divide both sides by pi)
3*972 = 4r^3 ... multiply both sides by 3
2916 = 4r^3
4r^3 = 2916
r^3 = 2916/4 ... divide both sides by 4
r^3 = 729
r = (729)^(1/3) ... apply the cube root to both sides
r = 9

The radius is 9, so the diameter is
d = 2*r = 2*9 = 18 cm

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Answer:

Solteros= 27

Step-by-step explanation:

<u>Entiendo que de los 120 tripulantes, sobrevivió el 30%. Y de los sobrevivientes, 25% son casados.</u>

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Primero, debemos calcular la cantidad de sobrevivientes:

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Ahora la cantidad de casados, y por diferencia los solteros:

Casados= 36*0.25= 9

Solteros= 36 - 9

Solteros= 27

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