Question

The awnser choices are in the second photonplz awnser asap their are 3 questions plz help

Answer 1

Answer:

Part A : $1621\frac{1}{3}\pi$ cubic meters.

Part B : 540π cubic cm.

Part C : $V = \frac{4}{3}\pi r^{3}$

Step-by-step explanation:

Part A :

The volume of the silo includes the volume of a hemisphere and a cylinder.

So, the total volume

$V = \frac{2}{3}\pi r^{3} + \pi r^{2}h$

⇒ $V = \frac{2}{3} \times \pi (8)^{3} + \pi (8)^{2} (20)$

⇒ $V = \frac{1024}{3}\pi + 1280\pi = 1621\frac{1}{3}\pi$ cubic meters. (Answer)

Part B :

The volume of the cylindrical cup with height 15 cm and base radius 6 cm is given by

$V = \pi r^{2}h = \pi (6)^{2} (15) = 540\pi$ cubic cm.

Therefore, Mary can put 540π cubic cm of water in the cup with out it overflowing. (Answer)

Part C :

A basketball is of a spherical shape.

So, the formula of its volume is given by $V = \frac{4}{3}\pi r^{3}$. (Answer)