the diameter of a circle is 4 in. find its area in terms of pi

Answers

Answer 1

Step-by-step explanation:

A ≈12.57in²

d = Diameter

Using the formulas

A=πr2

d=2r

Solving forA

A=1/4πd²=1/4·π·4²≈12.56637in²

Answer 2

Answer:

A = 4π in²

Step-by-step explanation:

The area (A) of a circle is calculated as

A = πr² ( r is the radius )

Here d = 4, then r = 4 ÷ 2 = 2

A = π × 2² = 4π in²


Related Questions

This is a Khan Academy question from Trig

Answers

Answer:

Option A

Step-by-step explanation:

By definition, tan∅=opposite/adjacent, so A would be your other option. HI represents the length of the side opposite to ∠H while GI represents the length of the side adjacent to ∠H.

Hope that clears things up!

Please help me with this question

Answers

Answer:

B) 61° + 24° =

Step-by-step explanation:

A community center rents thier hall for special events. They charge a fixed fee of $200 plus an hourly fee of $22.50. Lin has $300 to spend on renting the hall for a fundraiser white and solve an inequality that represents this situation

Answers

Answer

[tex]300 \geqslant 22.5x + 200[/tex]

Step-by-step explanation:

300 is less than or equal to 22.5x + 200

the budget is 300 so you can't go past that number. the appropriate inequality sign for this would be less than or equal to the following equation: $22.5 x (where x= number of hours) + the fixed fee of $200

don't include $ (or other units of measurements) in equations!!

Complete the table of values for function A

Answers

X=2 and y=26 that’s the correct answer I’m not 100% sure

Please help me on this

Answers

Answer:

Points H, J, G, and K

Step-by-step explanation:

For quadrats the right top is 1

left top is 2

left bottom is 3

right bottom is 4

and it is asking for the forth one so look at the right bottom "square"

G and K are on the line but that still makes them part of a Quadratic Just they get to be part of 2 of them like...

G is 3 and 4

K is 1 and 4

Puppy...have a puppy.

If a pound of ham costs $5.25, what is the approximate cost of 7
ounces?
A. $2.30
B. $36.75
C. $5.25
O D.
D. $2.63

Answers

The answer is B.$36.75

I’m so sorry for this. I’m just really bad at math. and I don’t understand. But ty to the people that are helping me:).

Answers

Answer:

4/6 or 2/3 or D

Step-by-step explanation:

4 cards have either take 3 cards or take two cards.

The other two are either play a card or lose a turn 4+2=6

4 over 6

simplified to 2 over three

or option D

Answer: The answer is D, 2/3

Step-by-step explanation: There are 6 sections the spinner can land on so that's the denominator. The numerator is the number of "Take Cards" there are. So the unsimplified answer is 4/6. Hope this helps!! :)

i need help on question 3

Answers

Answer:

14

Step-by-step explanation:

21-3^2+2      

3 to the second power is 9

then,  21 - 9 + 2

left to right.....

21 - 9 = 12

12+2=14

help please look below

Answers

A is located, as you look A is past -2 almost hitting -3 making the mark 2.8 so the answer is A

PLZ HELP ME ASAP NO LINKS OR ABSURD ANSWERS

Answers

Answer:

sorry,dont know......

What is the mean of these numbers 8, 9, 9, 7, 8, 6, 9, 8

Answers

Answer:

7.83333333333

Step-by-step explanation:

Mean= Sum of all the numbers divided by the number of terms

Step: Add all the numbers

9+7+8+6+9+8=47

Step 2: Divide by the number of terms

Number of terms=6

So, 47 divided by 6= 7.83333333333

Please give brainliest if this helped you!

Bella was here :)

Part B
Which of the following statements is true all that apply.

A.more males were surveyed than females.

B.more female like soccer.

C.An equal number of people like soccer and basketball.

D.Twice as many females than males like basketball

Answers

Answer:

Soccer: 19 Males

Basketball: 29 females

Total: 40 males, 60 females

Step-by-step explanation:

                         MALES     FEMALES   TOTAL

SOCCER        ║     19     ║      31       ║    50   ║

BASKETBALL║     21      ║      29      ║    50   ║

TOTAL           ║     40     ║      60     ║   100   ║

[OPTIONS ⇒ 19, 29, 40, 60]

SOCCER:

x + 31 = 50

50 − 31 = 19

19 males

BASKETBALL

21 + y = 50

50 − 21 = 29

29 females

TOTAL:

F: 31 + 29 = 60

M: 19 + 21 = 40

60 + 40 = 100

60 females

40 males

I just need to figure this out.

Answers

Answer:

V=π(d/2)^2h

a) V = 3.14 x (15/2)^2 x 5.7

V= 1007.27

I have to go back to class i gave the formula and ex. pls I hope this helped

Mariana picked apples at an orchard. She and her ate 6 of them leaving 36 apples

Answers

Answer: Hello, There! your Answer is Below

42 is the answer

Step-by-step explanation:

First We Have to Figure Out What Minus 6 Equals 36 So We're going to use x As The Total Number Of Apples They Had So We Can Add 36 + 6 Which Gives Us The Answer 42 So X=42

Hope this Helps you!!

Have a great day!!

Can someone help please?

Answers

Answer:

C I believe. I hope this helps

factorize 2x⁴+x³-14x²-19x-6
no spam and kindly explain your answer!​

Answers

Step-by-step explanation:

Consider given the expression,

⇒2x4+x3−14x2−19x−6

⇒x3(2x+1)−(14x2+19x+6)

⇒x3(2x+1)−(14x2+7x+12x+6)

⇒x3(2x+1)−[7x(2x+1)+6(2x+1)]

⇒x3(2x+1)−(2x+1)(7x+6)

⇒(2x+1)(x3−7x−6)

Hence, this is the answer.

When the value of x is 27, which
equation is true?
A ſx- 6 = 12
C -x + 13 = 40
B 2x - 27 = -27
D 6 - 5x=9

Answers

[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the concept of maths,

here, A.) is correct because.

2/3(27) - 6 ==> 18 - 6 = 12

hence, LHS = RHS,

so option A is correct

Can someone please tell me what the mean median mode and range is for 92, 63, 22, 80, 63, 71, 44, 35 please?

Answers

mean- 58.75
median- 63
mode-63
range-70

Answer:

answer is 63

Step-by-step explanation:

find the value of x!!!!!!

Answers

Answer:

x=112°

Step-by-step explanation:

The interior angles of any quadrilateral adds up to 360°.

84+53+11+x=360

x=360-111-53-84=112

PLEASE HURRY, ME AND MY FRIEND NEED HELP WITH THIS QUESTION
Terri has a balance of $795 on his credit card. He is currently making monthly credit card payments of $20 a month. What will happen if he increases the amount he is paying by $18 a month?
A. It will take him less time to repay the loan
B. The interest rate will increase
C. It will take him longer to repay the loan
D. The interest rate will decrease

Answers

Answer: A

Step-by-step explanation:

If he increases the amount then the less time it will take to pay the loan

1. Find the measure of the hypotenuse of a right triangle with legs of 11 inches and 60 inches. Explain.​

Answers

Answer:

61

Step-by-step explanation:

It should be 61

Square 60 and 11 and add them together to get 3271

Then square root 3271

You'll get 61

Which is the answer

A rectangle has a length that is three more than twice it’s width. Which equation correctly models it’s area

Answers

Answer:

Solution given:

width =w

length =3w

now we have

area of rectangle =length ×width=3w×w=3w² is a required expression.

Step-by-step explanation:

hope it is helpful to you

Sooo....

solve 3x + 3/5 equal or > 4/5.

yeah if u dont understand i dont blame ya.

Answers

The answer would be x equal or greater than 1/15

1/5 could be replaced with 0.06

43) A bag contains 3 blue chips, 2 red chips, and 4 green chips. If one chip is drawn random, what is the
probability of drawing a blue chip?
A) 1/2
B) 1/3
C) 1/4
D) 1/9

Answers

the answer is b. 1/3.

A circle has a center at A (-3,4) and radius of 4 units. What is the equation of the circle? Show work!

Answers

Answer:

The equation of the circle is (x+3)^2 + (y-4)^2 = 16.

Step-by-step explanation:

The equation of a circle can be calculated if the center and the radius are known. The equation of a circle is given by  (x-h)² + (y-k)² = r²

Where  (h, k) = center coordinates  and r = radius.

A living room wall is 20 feet long, and 12 feet high. How many cans of paint do you need to cover the wall if one small can of paint covers 60 square feet?

Answers

Answer:

4........................

4 cans of paint………………

For positive acute angles AA and B,B, it is known that \cos A=\frac{24}{25}cosA= 25 24 ​ and \sin B=\frac{11}{61}.SinB= 61 11 ​ . Find the value of \sin(A+B)sin(A+B) in simplest form.

Answers

Answer:

684/1525

Step-by-step explanation:

Given

cosA = 24/25

SinB = 11/61

Sin(A+B) = SinAcosB + CosAsinB

Get SinA

Since

Cos A = adj/hyp

adj = 24

hyp = 25

opp² = 25² - 24²

opp² = 625 - 576

opp² = 49

opp = √49

opp = 7

sinA = opp/hyp

sinA = 7/25

Also if SinB = 11/61

opposite = 11

Hypotenuse = 61

adj² = 61² - 11²

adj² = 3,721 - 121

adj² = 3600

adj = √3600

adj = 60

Cos B = adj/hyp

CosB = 60/61

Sin(A+B) = SinAcosB + CosAsinB

Sin(A+B) = 7/25(60/61) + 24/25(11/61)

Sin(A+B) = 420/1,525 + 264/1,525

Sin(A+B) = 684/1525

please helpp i wil give 10 pointss

Answers

Answer:

x= 17

y= 8

QPR= 35

QRP= 60

Step-by-step explanation:

I'll give brain to who gets this right.

Answers

Answer:

parallel

Step-by-step explanation:

I dont know lol

4/5 divided by 1/3 =

hurry up gamers

Answers

Answer:

2 2/5 or 12/5

Step-by-step explanation:

Decimal form: 2.4

Improper fraction: 12/5

Mixed Fraction/Simplified: 2 2/5

Answer:

12/5 or 2 2/5

Step-by-step explanation:

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