Answer:
<h2>864 cm²</h2>
Step-by-step explanation:
The formula of a volume of a cube:
<em>s</em> - <em>edge</em>
We have
Substitute:
![s^3=1728\to s=\sqrt[3]{1728}\\\\s=12\ cm[/texbecause[tex]12^3=1728](https://tex.z-dn.net/?f=s%5E3%3D1728%5Cto%20s%3D%5Csqrt%5B3%5D%7B1728%7D%5C%5C%5C%5Cs%3D12%5C%20cm%5B%2Ftex%3C%2Fp%3E%3Cp%3Ebecause%3C%2Fp%3E%3Cp%3E%5Btex%5D12%5E3%3D1728)
The formula of a surface area of a cube:
(6 square faces of a cube)
Substitute:
<h3><u>
The value of a is equal to 5.5</u></h3>
-22 = 11 - 6a
<em><u>Add 6a to both sides.</u></em>
6a - 22 = 11
<em><u>Add 22 to both sides.</u></em>
6a = 33
<em><u>Divide both sides by 6.</u></em>
a = 5.5
Answer:
$90
Step-by-step explanation:
First the given is the listed price of DVD which is 120 dollars.
Now we need to find out what the price will be after discount of 25%
To do this we will have to convert the percentage to decimal by moving decimal 2 place left and removing percentage sign which will become 0.25.
Then we multiply by the listed price which is 120
so 120*0.25=30
so we subtract 30 by original price cause that is the discount off we are receiving
120-30=90
so 90 will be the sale price after 25% discount.
