Find the area of a circle with a diameter of 56 millimeters. Round your answer to the nearest hundredth.

area: about ???
mm2

9514 1404 393

Answer:

  2463.01 mm²

  2461.76 mm² if you use 3.14 for π

Step-by-step explanation:

The formula for the area of a circle is ...

  A = πr²

where r is the radius, half the diameter.

For a diameter of 56 mm, the radius is 28 mm. Using that in the formula gives an area of ...

  A = π(28 mm)² = 784π mm²

For an appropriate value of π, the area is ...

  784π mm² = 2463.00864... mm² ≈ 2463.01 mm²

For 3.14 as the value of π, the area is ...

  784(3.14) mm² = 2461.76 mm²

_____

Comment on pi

Quite often these problems expect you to use 3.14 for pi. The required answer has 6 significant digits, so the use of a 3-digit value for pi is not appropriate. Rather, the value used should be 3.141493 or even more accurate.

can somebody answer this pls

PLZZZ HELPPPPPPPPPPPPP

A puppy weighs 3 lbs at 10% of its adult weight. How many lbs will the puppy be when it is 60% of its weight?

Find the slope of the line on the graph. Reduce all fractional answers to lowest terms.



-2
2
1/2

Please help me and give me a detailed answer thank u!

Someone please helps me do this math

Stumble has 5 apples, he ate 2 of them. How many apples does Stumble have left?

I need help with this but take your time it is early!
Show work and how you got the answer please!

15 POINTS HURRY PLEASE!!

please


An art class is making a mural for their school which has a triangle drawn in the middle. The length of the bottom of the triangle is x. Another side is 14 more than times the length of the bottom of the triangle. The last side is 15 more than the bottom of the triangle. Write and simplify an expression for the perimeter of the triangle.


What is the expression for the perimeter of the​ triangle?

Santa read 13 books to children at the mall. Four - fifths of the books were about the North Pole. How many books were about the North Pole? A. 10 2/5

B. 52/65

C. 5 2/10

D. 7 12/2

antonio wrote the equation 80.4 ➗ d = 0.0804. What value of d makes the equation true? *

A 100
B 1,000
C 10,000
D 10

A company that makes boxes finds that 3 out of 20 boxes are damaged. What percentage of boxes are damaged?
Group of answer choices

17%

15%

28%

19%
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Jared has 18 white socks, 8 black socks, and 14 gray socks. What percentage of Jared's socks are white or gray?
Group of answer choices

80%

45%

69%

35%
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The sales price for a sweater was $21. The sweater was 40% off. What was the original price of the sweater?
Group of answer choices

$61

$42

$35

$25

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Most dogs fail to become service dogs. In a recent training class, only 7 of the 15 dogs were certified as service dogs. What percent of dogs became certified service dogs? Round to the nearest whole number.

ONLY PUT THE NUMBER!
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If 44% of the students in Mrs. Rutherford's class like chocolate ice cream, then how many students are in Mrs. Rutherford's class if 11 like chocolate ice cream

ONLY PUT THE NUMBER!

Two whole numbers A and B satisfy the following conditions. Find A and B.

A−B=18
A: B is equivalent to 11:5.

A=
B=

PLEASE HELP 30 POINTS!!!

I need help with this because i dont know this please send help....

The right triangle on the right is a scaled copy of the right triangle on the left. Identify the scale factor. Express your answer in simplest form.

Need the answer ASAP

Help Plzzzzzzzzzzzzz Thx 7th grade math :)

I need help finding x!

Please show work for both!

pls help ASAP
WIll mark brainliest

PLEASE HELP! FINALS! - Shawn bought a 10-pound turkey to serve for Thanksgiving. He plans to serve each adult 2/5 of a pound.

Complete each of the 2 activities for this task.

Activity 1 of 2 :
Part A: Write an equation to represent the number of adult servings, x, Shawn can get from the 10 - pound turkey. Use your equation, x, Shawn can get from the 10 - pound turkey. Use your equation to determine the number of adult servings.

Activity 2 of 2 :
Part B: The price of a turkey is $1.36 per pound. Write an equation that can be used to determine the total cost, c, for a turkey that weighs *p* pounds. Then, find the cost of Shawn's turkey.

The table below shows the federal income tax rate for wages earned for married couples.

Annual Income (Wages) Income Tax Rate
$0 to $18,150 10%
$18,151 to $73,000 15%
$73,001 to $148,850 25%
$148,851 to $226,850 28%
$226,851 to $405,100 33%
$405,101 to $457,600 35%
Over $457,600 39.6%

The Rodriguez Family earned $115,500 last year. How much did they pay in income taxes?
A. $28,875
B. $38,775
C. $25,726
D. $29,225

Match the coordinates with the quadrants they lie in. || Quadrant I || Quadrant II || Quadrant III || Quadrant IV ||

Which expression is equivalent to 5(3 + 4k ) + 3(4 +k )?

27 +5k
3 + 5k
27 + 23k
3 + 23k

If there are 42 boys and 56 girls in a room, fill out all of the possible ratios of boys to girls that could be made.

HELP
Reesa’s sister is a salesperson at Old Navy.
Reesa’s sister earns a commission. She makes 4.5% of the amount she sells. Last week, she sold $800 worth of clothes. How much was her commission? Use c for commission and s for sales.
plz help me!!!!!!!

PLZ ANSWER ASAP WILL MAKE BRAINLIEST FOR BEST ANSWER AND EXPLAIN YOUR ANSWER
Three friends participated in a fund-raising project. Dexter collected 2/5 of the total amount. Carter collected $272 more than Jack. Jack collected $764 how much did the three of them collect altogether?

There were 1,265 people at a boat show. After 1/5 of the adults and 1/3 of the children left, there was an equal number of children and adults at the show. how many people left the show?

for spirit week at whoville Middle School students were encouraged to wear the school colors of burgundy and gold of the 1,500 students,1200 students wore burgundy wild 300 students were gold.
what percent of the total numbers of students wore gold?

Please help, I can't think today.

Help please I will give brainleist