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Ainat [17]
2 years ago
7

Calculate the area of each circle

Mathematics
1 answer:
Marysya12 [62]2 years ago
8 0

Answer:

2.01  \: {inches}^{2}

Step-by-step explanation:

The formula to find the area of a circle is

area \: of \: circle \:  = \pi {r}^{2}

Let pi be (3.14), the radios as given in the question is (1.6 ÷ 2 = 0.8). Therefore;

\pi {r}^{2}  =  \\ (3.14) \: {(0.8)}^{2}  \\ 3.14 \times 0.64 =  \\ 2.0096\: or \: 2.01{inches}^{2}

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Susan made the following 3-dimensional figure from a net. What 2-dimensional shapes are used to make the faces of the figure?
konstantin123 [22]

Answer:

D)

Step-by-step explanation:

I don't know if there was a picture, but d will made a triangular prism. All are possible but they will look more like a dome.

5 0
3 years ago
Which equation represents a proportional relationship?
asambeis [7]

Given:

Four equations in the options.

To find:

The equation which represents a proportional relationship.

Solution:

If y is proportional to x, then

y\propto x

y=kx

where, k is the constant of proportionality.

In this case if x=0, then y=0. It means the graph of a proportional relationship passes through the origin.

From the given options, only option B, i.e., y=\dfrac{1}{4}x, is of the y=kx, where, k=\dfrac{1}{4}.

So, the equation y=\dfrac{1}{4}x represents a proportional relationship.

Therefore, the correct option is B.

6 0
2 years ago
The volume of the cone shown is 5 cubic inches. What is the height of a cone with the same base diameter but a volume of 10 cubi
Alisiya [41]

Answer:

The height of the big cone is double the one in the small cone

h2 = 2h1

Step-by-step explanation:

Given that:

  • The volume of the small cone: 5 cubic inches
  • The volume of the big cone: 10 cubic inches

As we know, the volume of a cone is as following:

V = (1/3)*area of the base*height

If the base diameter are unchanged => area of the base of the two cones are  unchanged and from the given information, the volume of the big cone is double the volume of the small cone. So the height of the big cone is double the one in the small cone

<=> h2 = 2h1

3 0
3 years ago
What's the answer please help! :)
sammy [17]

Answer:

Answer J or 900!!

Step-by-step explanation:

Brainliest Please!

5 0
3 years ago
Mildred bought 2-cent stamps, 4-cent stamps, and 5-cent stamps for $4.35. The number of 2-cent stamps exceeded the number of 5 c
vfiekz [6]

5 cent = 0.05x

<span><span>2 cent  </span>= 0.02(x+50)</span>

4 cent = 0.04(2x-10)

 

0.05x + 0.02(x+50) + 0.04(2x-10)

0.05x + 0.02x +1 + 0.08x -0.4 = 4.35

0.15x +0.6 = 4.35

0.15x = 3.75

X = 3.75 / 0.15 = 25

<span> 25 5 cent stamps ( 25*0.05 = 1.25)</span>

25+50 = 75 2 cent stamps ( 75*0.02 = 1.50)

2*25 =50-10 = 40 4 cent stamps ( 40*0.04 =1.60)

 

1.25 + 1.50 +1.60 = 4.35

5 cent = 25

2 cent = 75

4 cent = 40


8 0
3 years ago
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