A cube has a width of 20 ft what is the surface area of the cube

1 answer:

8 0

It is 2400. This is because each face is 400 square feet. There are 6 faces. So I multiplied 400 by 6 and got the answer. Hope I was helpful.

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julia-pushkina [17]

Answer:

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dangina [55]

Answer: The correct option is

(E) 80,000.

Step-by-step explanation: Given that after adding 4,000 gallons of water to a large tank that was already filled to $\dfrac{3}{4}$ of its capacity, the tank was then at $\drac{4}{5}$ of its capacity.

We are to find the number of gallons of water that the tank hold when filled to capacity.

Let the tank can hold x gallons of water when filled to capacity.

Then, according to the given information, we have

$\dfrac{3}{4}x+4000=\dfrac{4}{5}x\\\\\\\Rightarrow \dfrac{4}{5}x-\dfrac{3}{4}x=4000\\\\\\\Rightarrow \dfrac{16-15}{20}x=4000\\\\\Rightarrow x=4000\times20\\\\\Rightarrow x=80000.$

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Option (E) is CORRECT.

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If you send me the points I’ll do it in the comments

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