1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
klasskru [66]
3 years ago
13

1. Pia drew a circle with a circumference of C and a diameter of 14 in. Pia knows that , and she wrote the following equation to

represent the value of .
(a) There is an error in Pia’s equation. Write an equation to correctly represent the value of . Show your work.
(b) Write an equation and find the circumference of the circle.
Mathematics
2 answers:
Arada [10]3 years ago
6 0

♡ The Questions ♡

-Pia drew a circle with a circumference of C and a diameter of 14 in. Pia knows that C= πd, and she wrote the following equation to represent the value of π.

(a) There is an error in Pia’s equation. Write an equation to correctly represent the value of π.

(b) Write an equation and find the circumference of the circle.

Show your work.

-Hank used a semicircle, a rectangle, and a triangle to form the following composite figure. What is its area in square centimeters? Use 3.14 to approximate π. Show your work.

-At a zoo, the lion pen is surrounded by a ring-shaped sidewalk. The outer edge of the sidewalk is a circle with a radius of 11m. The inner edge of the sidewalk is a circle with a radius of 9m.

(a) Write and simplify an expression for the exact area of the sidewalk.

(b) Find the approximate area of the sidewalk. Use 3.14 to approximate π. Show your work.

* ୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ The Answer(s) ♡

-1 (A) --> N/A!

-1 (B) --> N/A!

-2 (A) --> 1,156 Sq Meters

-3 (A) --> 40π Sq Meters

-3 (B) --> 125.6 m^2

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ The Explanation(s)/Step-By-Step(s) ♡

-1 (A) --> N/A!

-1 (B) --> N/A!

-2 (A) --> We can figure out that the rectangle is 50 cm, and the triangle is 26 cm! In order to figure out the circle's cm, we can use the formula π x r^2. The radius of the circle is 10 cm, and the π is 3.14. We can multiply 3.14 by 10, this makes the number 31.4 cm! If we add the numbers, we end up with the sum of 107.4 cm. Converting 107.4 in Sq Meters leaves us with 1,156 Sq Meters! Therefore, 1,156 Sq Meters is your answer!

-3 (A) --> 125.6 m^2 is equal to 40π Sq Meters, This helps determine the exact area.

-3 (B) --> The approximate area of the sidewalk is 125.6 m^2. To solve this, you need to subtract the area of the inner edge of the lion pen from the outer edge of the lion pen.

A = π ( (11 m)^2 - (9 m)^2 )

A= π ( 121 m^2 - 81 m^2 )

A = π ( 40 m^2 )

A= 40π m^2. The area of the sidewalk comes out as 40π square meters, this is equal to 125.6 m^2, therefore, your answer will be 125.6 m^2.

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ Tips ♡

-Use some formulas!

-Use videos to help!

*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*

♡ Formulas ♡

A = π x r^2 (Radius)

A = 1/2 B x H (Height and Base, Triangle)

A = B x H (Height and Base, Parallelogram)

A = S1 X S2 (Sides, Square)

erastovalidia [21]3 years ago
3 0

Answer:

did you figure out the answer?

Step-by-step explanation:

You might be interested in
Suck at fractions and simplifying
galina1969 [7]

Answer:

7

Step-by-step explanation:

2(3) + 6²/6

Multiply 2x3 and 6² is just multiplying 6x6

6+36/6

Add 6+36

42/6

Divide 42 by 6

7

8 0
2 years ago
Read 2 more answers
You pay $2.40 for 3/4 pound of grapes your friend buys a pound of grapes at the same time and estimates that he will pay $1.80 w
LenKa [72]

I would say your friends assumption is wrong. Why?


Because, if you payed $2.40 for 3/4 pounds of grapes, your friend should pay more for an entire pound, not less.


Hope this helped! c:

8 0
3 years ago
How many packages of diapers can you buy with $40 if one package costs $8. 8TH GRADE ONE STEP EQUATION PROBLEM. NEED HELP ASAP
Aneli [31]
40/8=5
So 5 packs of diapers.
3 0
3 years ago
Read 2 more answers
If a*b means 2a + b , then what is 2*5 ?
NeX [460]

Answer:

9

Step-by-step explanation:

let a = 2

b = 5

2a + b

Substituting the values,

=> 2(2) + 5

=> 4 + 5

=> 9

3 0
3 years ago
What is the measure of angle x?<br> Enter your answer in the box.<br> x =<br> UwU PLZ help
MissTica
I think it might be 43° because since the line is going through the middle, it would be 180-47-90=43 (the 90 came from the right angle)

hope this helps! :)
7 0
3 years ago
Read 2 more answers
Other questions:
  • A young equestrian loved to ride her horse all day long, dreaming of the day she would ride in the Kentucky Derby. One day in ea
    8·1 answer
  • I don't know how to do #86-#88. Any help?
    8·1 answer
  • An employee at plant A receives a salary of $350 per week and a 2.9% bonus on the production sales for the week. If the sales fo
    7·1 answer
  • If helen travels 567 miles miles in 9 hours how far does she travel in one hour
    15·1 answer
  • What is accurate about the scientific results learned by counting tree rings? Study of tree rings and associated geology shows t
    10·1 answer
  • Can someone help with this please?
    8·1 answer
  • Which of the following is 1,215 divisible by? Select all that apply.
    10·2 answers
  • Find the correct value of x
    12·1 answer
  • B<br> X+2<br> 3<br> D<br> E<br> х<br> 2<br> С C<br> A<br> x = [?]
    8·1 answer
  • Find FH<br><br> FH = {Blank}
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!