3. What is the radius of a circle whose area is 64π cm squared?

Answers

Answer 1

Answer:

Area = 64π

Area \: = \pi {r}^{2}Area=πr

2

64 \: \pi \: = \pi {r}^{2}64π=πr

2

{r}^{2} = \dfrac{64\pi}{\pi}r

2

=

π

64π

{r}^{2} = 64r

2

=64

r \: = \: \sqrt{64} = 8r=

64

=8

Radius = 8 units

Finding the Diameter -

Diameter = Radius x 2 = 8 x 2 = 16 .

\bold{Diameter \: is \: 16 \: units}Diameteris16units


Related Questions

Pls help me ASAP thank you

Answers

Answer:

6. 8 mi³

7. 72 cm³

Step-by-step explanation:

6. Volume of triangular pyramid = ⅓*A*H

Where,

A = area of triangular base = ½*b*h = ½*3*4 = 6 mi

H = height of pyramid 4 mi

Volume = ⅓*6*4 = 8 mi³

7. Volume of triangular prism = ½*bhl

Where,

b = 3 cm

h = 6 cm

l = 8 cm

Volume = ½*3*6*8 = 72 cm³

Please help me with this math anyone I try but I don’t want to do it wrong!

Answers

Answer:

1. 10, 20, 30, 31, 32, 33, 34

2. 10, 20, 30, 31, 32, 33, 34, 35, 36

Step-by-step explanation:

The spray from a spinning lawn sprinkler creates a circle with a radius of 50 feet. What is the area of the circle covered by the lawn sprinkler, in square feet?

A. 625π square feet

B. 50π square feet

C. 2500π square feet

D. 100π square feet​

Answers

Answer:

b

Step-by-step explanation:

The scale model of a cell tower is shown below
Height = 3 ft The scale used for the model is 1:60. What is the actual height of the cell tower? ?​

Answers

Answer:

Step-by-step explanation:

please helppp Which ordered pairs lie on the line shown in the graph?
864
28
CLEAR
SUBMIT
(-2,- 6.5), (0, -0.5), (1, 2.5), (2, 5.5)
(-6.5, -2), (-0.5, 0), (2.5, 1), (5.5, 2)
(2,6,5), (0, 0.5), (-1, -2.5), (-2, -5.5)
(6.5, 2), (0.5, 0), (-2.5, -1), (-5.5, -2)
0

Answers

Answer:

I think a option is correct

Step-by-step explanation:

because they are point on the graph

-2,-6.5,(0,-0.5),(1,2.5),2,5.5)

pls help meeeee its easy but i cant think rn lol

Answers

Answer:

It is -3/4

Step-by-step explanation:

Coefficient : the number multiplied by d² in the equation

so it's ans is -3/4

just go to photo math & it’ll have the answer i tried attaching the link it won’t let me

Distance and midpoint formulas

Answers

Derived from the Pythagorean Theorem, the distance formula is used to find the distance between two points in the plane. The Pythagorean Theorem, a2+b2=c2 a 2 + b 2 = c 2 , is based on a right triangle where a and b are the lengths of the legs adjacent to the right angle, and c is the length of the hypotenuseAnswer:

Step-by-step explanation:

I WILL MARK BRAINLIEST!! What is the value of x in this triangle?

Answers

Answer:

x = 2

Step-by-step explanation:

Answer:  x = 8

=============================================================

Explanation:

The tickmarks tell us which sides are the same length. This in turn tells us that points N and O are midpoints of LJ and LK respectively (since midpoints cut a segment in half). We consider segment NO to be a midsegment.

Recall that midsegments are half as long as the side they are parallel to. That means segment NO is half as long as JK. This reverses to segment JK being twice as long as segment NO.

-------------

JK = 2*(NO)

2x+8 = 2*(12)

2x+8 = 24

2x+8-8 = 24-8 .... subtract 8 from both sides

2x = 16

2x/2 = 16/2 ...... divide both sides by 2

x = 8

If x = 8, then 2x+8 = 2*8+8 = 16+8 = 24. This shows that segment JK is 24 units long which is double that of midsegment NO being 12 units long. This confirms we have the correct x value.

What is the volume of a sphere with a radius of 21 units?
O A. 9261 7 units
O B. 12,348 units3
O C. 5887 units
D. 37,04477 units3

Answers

Answer: D

Step-by-step explanation:

The volume of the sphere is 12,348 cubic units.

Option B is the correct answer.

What is a sphere?

It is a three-dimensional figure.

The formula for the volume of a sphere is given by V = (4/3)πr³,

We have,

The formula for the volume of a sphere is given by V = (4/3)πr³,

where r is the radius of the sphere and π is a constant approximately equal to 3.14.

Substituting the value of r = 21 units, we get:

V = (4/3)π(21)³

V = (4/3)π(9261)

V = 154(3)(7²)

V = 22,562π cubic units (using 22/7 as an approximation of π)

Rounding to the nearest whole number, the volume of the sphere is approximately 12,348 cubic units.

Thus,

The volume of the sphere is 12,348 cubic units.

Learn more about Sphere here:

https://brainly.com/question/12390313

#SPJ7

No clue on how to do this

Answers

Answer:

parallelogram

Step-by-step explanation:

That's the answer....

The floor of a storage unit is 6 ft long and 8 feet wide what is the distance between two opposite corners of the floor

Answers

Answer:

10 feet

Step-by-step explanation:

Find the hypotenuse

a^2 + b^2 = c^2

6^2 + 8^2 =c^2

36+ 64 = c^2

100=c^2

(square root) 100 = 10

c=10

The table shows the running speeds of 10 randomly
selected roadrunners.
Speed (miles per hour)
| 12 | 13 | 14 | 18 | 14 | 13 | 14 | 17 | 12 | 13
Based on the data, select the most reasonable prediction about the speed of
roadrunners
A. The typical roadrunner runs at a speed of about 14 miles per hour.
B. The typical roadrunner runs at speeds greater than 17 miles per
hour
C. The typical roadrunner runs at a speed of about 10 miles per hour.
D. The top speed of a roadrunner is 17 miles per hour.

Answers

Answer:

the answer is A

Step-by-step explanation:

Answer:

Correct answer is A

Step-by-step explanation:

Angle 5 measures 90 degrees and angle 1 measures 40 degrees fill in the other angle measures just put it the number.

Answers

Answer:

sorry for being late

1=40

2=50

3=50

4=130

5=90

Step-by-step explanation:

Please answer will give branliest

Answers

Answer:

d

Step-by-step explanation:

Answer:

The answer is C.

Step-by-step explanation:

You can see that s corresponds with Sandra and since it's subtracting by 6 you would figure out what the equation represents that answer choice.


The percentage increase on an item is 9 %. The old price is R455.00 Calculate the new
price.

Answers

Hubbub is g vu ok just in b by

What ratio is an equal ratio of 1:3?

Answers

Answer:

Any ratio that can be simplified to 1:3

Step-by-step explanation:

Any ratio would work for this answer, but the ratio would have to simplify back to 1 to 3.

Here are some examples you could use:

2:6 = 1:3

3:9 = 1:3

4:12 = 1:3

6:18 = 1:3

7:21 = 1:3

10:30 = 1:3

Ariana invests $2,000 at a rate of 6% annual interest
compounded quarterly. Approximately how much is Ariana's
investment worth in 3 years?
I

Answers

Step-by-step explanation:

Compounded quarterly means n=4

A company is going to make an oil container in the shape of a cylinder. As shown below, the container will have a height 6 m of and a radius of 5 m. The container will be made from steel (including its top and bottom). Suppose the total cost of steel will be $12,434.40. How much will the steel cost per square meter? Use for 3.14 for II, and do not round your answer.​

Answers

Answer:

54

Step-by-step explanation:

Answer:

For oil container in the shape of a cylinder

radius (r) = 6 m

height (h) = 7 m

TSA of Cylinder

= 2πr ( r + h)

= 2 * 3.14 * 6 ( 6 + 7)

= 2 * 3.14 * 6 (13)

= 2 * 3.14 * 6 * 13

= 489.84 square meter

Now,

the total cost of the steel will be $18,613.92.

= 18613.92/489.84

= $38

Thus, The TSA of a cylinder is 489.84 square meter and $38 will the steel cost per square meter.

What is the slope of line help please pleaseeee

Answers

Answer:

3/2

Step-by-step explanation:

Slope = rise / run

Rise: 3

Run: 2

Slope = 3/2

Answer:

Awnser: the slope is y=-3/1

Solve the equation. Chec)
5m - l = 4m + 5

Answers

Answer:

m = 6

Step-by-step explanation:

5m - 1 = 4m + 5

5m - 4m = 5 + 1 = 6

m = 6

Answer:

m = 6

Step-by-step explanation:

5 x 6 = 30

30 - 1 = 29

4 x 6 = 24

24 + 5 = 29

29 = 29

If a 30-inch candle constantly burns 5 inches every minute, then at the end of what minute will the entire candle disappear?

Answers

Answer:

Step-by-step explanation:

Luke is 5 years older than twice his younger brother Thomas. If Luke is 19, how old is Thomas?

Answers

Answer:

Thomas is 14  because 19-5=14

Step-by-step explanation:

brailiest please

Answer:

7

Step-by-step explanation:

19-5=14

14/2=7

Each of 34 samples has a different standard deviation. How many of the 34
samples could be from the same population?
A. 33
B. 34
ОО
C. 32
D. 31

Answers

A) 33

There are always chances so you never know where the samples could be from. The answer 33 makes the most logical sense.

The answer is A Because it’s 33

9. Solve for x in the parallelogram below.
D
E
16x+2
50
с
F
Oo
10
O
3
05

Answers

Answer:

3

Step-by-step explanation:

50=16x+2

50-2=16x+2-2

48=16x

48/16=16x/16

3=x

the only answer it can really be is 3

A bakery used 35% more butter this month than last month. If the bakery used 240 kilograms of butter last
month, how much did it use this month?
You must show your work for full credit. Remember to include units.

Answers

Answer:

25%

Step-by-step explanation:

the bakery used 25% of butter.

Answer:

240 X 35% = 84

240 + 84 = 324

Step-by-step explanation:

There are 50 pennies in a roll. If you have 130 rolls of pennies, how many pennies do you have?

Answers

Answer:

6,500 pennies or $65

Step-by-step explanation:

The formula for the volume of a pyramid is V=1/3 Bh. What is h expressed in in terms of B and V?

Answers

V = 1/3 * B * h     /*3

V * 3 = B * h       /B

V * 3 / B = h

h = V * 3 / B

The figure above shows a square inscribed in a rectangle.
What is the area of the orange colored part of the figure? (Include only numbers, not words or labels, in your answer.)

Answers

Answer:

31 units ²

Step-by-step explanation:

Area of a rectangle = length × width

Length = 8 units

Width = 5 units

Area of a rectangle = length × width

= 8 units × 5 units

= 40 units ²

Area of of the blue square = length ²

Length = 3 units

Area of of the blue square = length ²

= (3 units) ²

= 9 units ²

Area of the orange colored part of the figure = Area of a rectangle - Area of of the blue square

= 40 units ² - 9 units ²

= 31 units ²

Area of the orange colored part of the figure = 31 units ²

Two Step Equation's and Inequalities -8=2-4y

Answers

-8=2-4y
-10=-4y
y=5/2 or 2 1/2 or 2.5
Improper fraction: 5/2
Mixed number: 2 and 1/2
Decimal: 2.5

Dos campanas suenan a intervalos de 18 y 30 minutos respectivamente. ¿A qué hora
sonarán juntas otra vez si empiezan simultaneamente a las doce del medio día?

Answers

i would be able to help but i only speak english
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