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pashok25 [27]
3 years ago
11

Find the circumference of these circles

Mathematics
1 answer:
EastWind [94]3 years ago
4 0
Formula for Circumference is 2*Pi*radius


1. 18.84 in.
2. 56.52 cm
3. 4.71 ft
4. 25.12 m
5. 37.68 ft.
6. 12.56 yd.
7.  43.96 in
8. 28.26 cm
9. 7.85 m
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Answer.......pls NOW
alina1380 [7]

Answer:

3. 224 cm3

4. 35 cm3

5. 60 cm3

Step-by-step explanation:

To find the volume you need to multiple the base times the height times the length.

3 0
3 years ago
In which quadrant will the following points be plotted (-4;-4) (5;2) (-6;11)
AVprozaik [17]
(-4,-4) is quadrant 3
(5,2) is quadrant 1
(-6,11) is quadrant 2
3 0
4 years ago
Which pair of figures appears to be congruent
inn [45]

Answer:

when they have equal sides and the exact shape and the same angle measures. they have tobe the same size.

Step-by-step explanation:

For example, when you have a square with sides 3 cm, then you compare it with the exact copy of the square. These squares are congruent. Two figures are congruent if and only if they have the exact same shape and the exact same size. If the corresponding sides of two figures with the same shape have the same length, then the two figures are congruent.

7 0
3 years ago
Two people are standing on opposite sides of a hill. Person A makes an angle of elevation of 65° with the top of the hill and pe
8090 [49]

Answer:

Option 3. 71 ft. is the distance between B and top of the hill.

Step-by-step explanation:

Let the height of the hill is h ft and the distance of A from the hill be x ft and distance from B to hill is y.

It is given distance between A and B is 45 ft. ∠BAO = 65° and ∠ABO = 80°.

We have to find the distance of B from the top of the hill.

Now from ΔACO tan 65 = \frac{h}{45-x} = 2.14

h=2.14(45-x)

From ΔBCO tan80 = \frac{h}{x} = 5.67

h = 5.67x

Now h = 5.67x = 2.14(45-x)

5.67x = 96.3 - 2.14x

2.14x + 5.67x = 96.3

7.81x = 96.3

x = 96.3/7.81 = 12.33 ft

Therefore cos80 = \frac{x}{OB}

0.174 = \frac{12.33}{OB}

OB = \frac{12.33}{.174}=70.86=71ft.

Therefore 71 ft is the distance between B and the top of the hill.

3 0
3 years ago
The portions of a house that need to be heated can be modeled by one rectangular prism with a length of 45 feet, a width of 20 f
nignag [31]

Answer:

12150 ft^3

Step-by-step explanation:

= (45)(20)(10) + (350)(9)

= 9000 + 3150

= 12150 ft^3

4 0
3 years ago
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