Part of the process for evaluating a video is
2 answers:
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Answer:
<h2>María used only 792 square centimeters to cover the best seller.</h2>Step-by-step explanation:
The volume of the best seller is about a rectangular prism, which is
Where is width,
is length and
is height.
In this case, we have
Replacing values in the formula, we have
Now, according to the problem, 10% of paper covers the book, that means we need to find the suface area and then find the 90% of the paper missing. The formula for surface area is
Replacing values, we have
If 792 square centimeters is 10% of the total paper, then
Therefore, there is 7,920 square centimeters of papers, but María used only 792 square centimeters to cover the best seller.
Não, não podemos fazer um triângulo com os comprimentos dos lados de 2 cm, 3 cm e 10 cm. Isso ocorre porque a soma de 2+3 < 10. (in english: No, we cannot make a triangle with the side lengths of measurement 2 cm, 3 cm, and 10 cm. This is because sum of 2+3 < 10).
<h3>What is triangle inequality theorem?</h3>Triangle inequality theorem of a triangle says that the sum of any of the two sides of a triangle is always greater than the third side.
Suppose a, b and c are the three sides of a triangle. Thus according to this theorem,
Now, for this case, the sides given are:
- a =2 cm,
- b = 3 cm,
- and c = 10 cm
But we see that:
a+ b = 5 cm which is < c which is of 10 cm.
Thus, these lengths don't satisfy the triangle inequality theorem, and therefore, cannot be sides of any triangle.
Learn more about triangle inequality theorem here:
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