If 50.9 oz of powder is needed for 6 gallons, how much is need for 20 fl oz

2.36 gallons is needed for 20 fl oz.

Step-by-step explanation:

Given:

If 50.9 oz of powder is needed for 6 gallons.

Now, to find the gallons is needed for 20 oz:

Let the gallons needed for 20 oz be .

Now, by using cross multiplication method we solve:

As given, 60 gallons is equivalent to 50.9 oz.

Thus, gallons is equivalent to 20 oz.

By cross multiplying we get:

⇒

Dividing both sides by 50.9 we get:

⇒

⇒

Therefore, 2.36 gallons is needed for 20 fl oz.

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere