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Yuri [45]
3 years ago
7

What is the surface area, in square inches, of a 8-inch cube?

Mathematics
2 answers:
Genrish500 [490]3 years ago
7 0

Answer: 384 in²

Step-by-step explanation: Surface area is the sum of the areas of all of the faces of a three-dimensional figure.

So to find the surface area of a cube, it's important to understand that each face of a cube has the same area. So we can simply find the area of one face of a cube and multiply it by the number of faces which is 6.

To find the area of one face of a cube, we can use the formula for the area of a square.

Area = S²

Since the length of a side is 8 inches, we have (8 in.)² or 8 inches x 8 inches which gives us 64 in.².

Now, since there are 6 sides to a cube, we have (64 in.)² (6) which is equal to 384 inches².

Therefore, the surface area of the cube is 384 in².

Nimfa-mama [501]3 years ago
6 0
Surface area of a cube=6*s^2=6*8^2=384
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hail 0.5 inch deep and weighing 1800 pounds covers a roof. the hails weight varies directly with its depth. write an equation th
frozen [14]

In a directly proportional relationship, increasing one variable will increase another. The weight of the roof whose depth is 1.75 inches is 6,300 pounds.

<h3>What is the directly proportional relationship?</h3>

In a directly proportional relationship, increasing one variable will increase another. This directly proportional relationship between p and q is written as p∝q where that middle sign is the sign of proportionality.

Let there are two variables p and q. Then, p and q are said to be directly proportional to each other if p = kq, where k is some constant number called the constant of proportionality.

Given the hail's weight varies directly with its depth. Therefore, the relation can be written as,

Weight ∝ Depth

W∝D

Introducing the constant to remove the proportionality we will get the equation as,

W = kD

1800pounds = k × 0.5 inches

3600ponds/inches = k

Now, the weight of the roof whose depth is 1.75 inches can be written as,

W = kD

W = 3600 × 1.75

W = 6,300 pounds

Hence, the weight of the roof whose depth is 1.75 inches is 6,300 pounds.

Learn more about directly proportional relationship:

brainly.com/question/13082482

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8 0
2 years ago
What number can go in 52 &amp; 13
Blababa [14]

Answer:

13 can go into 52.

Step-by-step explanation:

52/13=4

8 0
3 years ago
Which of these are statistical questions that you could ask to gather data on the types of transportation to school?
Pavlova-9 [17]

Answer:

A statistical question is a question that can be answered by collecting data that vary. For example, “How old am I?” is not a statistical question, but “How old are the students in my school?” is a statistical question.

The closest ones are - B and E

7 0
2 years ago
Can u please help me pls i ll give 5 stars and a heart
Digiron [165]

Answer:

-3/5

Step-by-step explanation:

2/3 *-9/8*-4/5*-1= -3/5

8 0
2 years ago
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The side of cube is 3m 30cm long, find out its volume​
Anettt [7]
90 volume because 3 multiples by 30 = 90
7 0
2 years ago
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