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r-ruslan [8.4K]
3 years ago
7

Guysss Pleaseee helppp​

Mathematics
1 answer:
Slav-nsk [51]3 years ago
7 0

Answer:

600 cm^2

Step-by-step explanation:

The side length of one of the faces is 10 cm

The length of a side is generally noted as s.

In this problem s = 10

Area of a cube face = s^2

So the area of one face of a cube = s^2 = 10^2 = 10*10 = 100

There are 6 faces on a cube.

Area = 6 * 100 = 600

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Null Hypothesis [H0] : u < 250  

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As t ie 3.99 > t value 1.65 ie for one tail 95% confidence level. So, we reject the null hypothesis & conclude that it contains more than 250 calories.  

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