![wy107](/avatars/42923.jpg)
wy107
20.05.2020 •
Mathematics
Could you guys help me find the area of these please? i don't understand how to do this
Solved
Show answers
More tips
- S Style and Beauty How Are Eyelash Extensions Applied? All Your Questions Answered...
- F Family and Home Tender Care for Your Parquet: Is it Possible to Clean Parquet?...
- S Society and Politics Is It Fact or Fiction? Let s Talk About Anton Chekhov s Pseudonym...
- S Sport Playing Bowling: Rules and Advice for Novices...
- C Computers and Internet How to Properly Repartition a Hard Drive?...
- A Auto and Moto What Is the Cost of Customs Clearance for a Car in Russia?...
- L Leisure and Entertainment Should You Buy a Ceramic Knife?...
- C Computers and Internet How to easily and quickly disable Firebug in Gmail and Google Docs...
- G Goods and services How to sew a ribbon: Tips for beginners...
- F Food and Cooking How to Make Mayonnaise at Home? Secrets of Homemade Mayonnaise...
Answers on questions: Mathematics
- M Mathematics Which fractions represent the length of the safety pin?...
- M Mathematics At Chesak Elementary School, 2 out of 3 students have brown eyes. Approximately how many students have brown eyes if the building has 432 students? A. 144 students...
- M Mathematics Imagine that a family decides to play a game each night. They all agree to use a tetrahedral die (i.e., a four-sidedpyramidal die where each of four possible outcomes...
- M Mathematics Use the two graph to help complete the statement below - Help me plz...
- M Mathematics 3. Cinderella pays $50 a year to be a member of the Midnight Shoe Club and $40 for each new glass slipper she buys. Which equation shows how many Cinderella pays...
- M Mathematics Please help i have no idea how to do this...
- M Mathematics In a sugar Facto all employees work a basic week of 40 hours. Any overtime worked during weekdays is paid for at time-and-a-quarter. Overtime worked on Saturday...
- M Mathematics Erika also created a line of best fit for the data where x is the number of minutes the water has been heated and y is the water s temperature in degrees Celsius....
- M Mathematics 18-3x - x2 Check all that apply. Nhich statements describe the key features of the graph of f(x) = -...
- M Mathematics A total of 326 adult and student tickets were sold for a high school play. The ticket prices were $8 for adults and $5 for students. If a total of $1972 was collected...
Ответ:
Step-by-step explanation:
okay, so the area of a circle can be found with the formula πr^2
this means you have to square the radius of the circle and multiply it by pi to find your answer.
9) r=5
πr^2
π(5)^2 = 25π or about 78.54cm^2
this is how you get the area of all other circles!
10) r=9
πr^2
π(9)^2 = 81π or about 254.47mi^2
11) r=8
πr^2
π(8)^2 = 64π or about 201.06mi^2
12) r=4.5
πr^2
π(4.5)^2 = 20.25π or about 63.62in^2
13) r=6.6
πr^2
π(6.6)^2 = 43.56π or about 136.85yd^2
14) r=2
πr^2
π(2)^2 = 4π or about 12.56cm^2
15) r=9
πr^2
π(9)^2 = 81π or about 254.47in^2
16) r=7
πr^2
π(7)^2 = 49π or about 153.94km^2
Ответ:
for 9, the answer is 246.49
Step-by-step explanation:
This is area of a circle correct?
The formula is PI x radius squared.
3.14 x the radius, which is 5, squared
I am re-editing this
so sorry the answer is actually 78.54
The reason why it is 78.54 is that you need to square the radius before multiplying with PI.
Ответ:
Step-by-step explanation:
Right triangle ABC is reflected over AC to form triangle AFC.
Triangle AFC dilated by a scale factor of two-thirds to form triangle DEC.
Reflection is a rigid transformation which preserves lengths and angles, then
Dilation is a transformation which maps the triangle into similar triangle, so
Thus,
Similar triangle have congruent corresponding angles, so
and proportional corresponding sides
Thus, correct options are: