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
Free_Kalibri [48]
3 years ago
11

I don't understand this please help

Mathematics
2 answers:
snow_lady [41]3 years ago
5 0
1. A = πr²
A = 3.14 × 3²
A= 28.26 cm²

2. A = πr²
A = 3.14 × 4²
A= 50.24 in²

3. A = πr²
A = 3.14 × 10²
A= 314 m²

4. A = πr²
A = 3.14 × 2²
A= 12.56 cm²

5. A = πr²
A = 3.14 × 9²
A= 254.34 ft²

6. A = πr²
A = 3.14 × 1.2²
A= 4.5216 km²

7. A = πr²
A = 3.14 × 50²
A= 7850 in²

8. A = πr²
A = 3.14 × 11²
A= 379.94 m²

9. A = πr²
A = 3.14 × 2.5²
A= 19.625 cm²

10. A = πr²
A = 3.14 × 7²
A= 153.86 in²

11. A = πr²
A = 3.14 × 5²
A= 78.5  cm²

12. A = πr²
A = 3.14 × 1.5²
A= 78.5 m²

13. A = πr²
A = 3.14 × 8²
A= 200.96 ft²

14. A = πr²
A = 3.14 × 20²
A= 62.8 m²

15. A = πr²
A = 3.14 × 6²
A= 113.04 in²

16. A = πr²
A = 3.14 × 3.5²
A= 38.465 cm²

17.A = πr²
A = 3.14 × 0.3²
A= 0.2826 km²

18. A = πr²
A = 3.14 × 1²
A= 3.14 m²
Troyanec [42]3 years ago
4 0
Circle area equation is 3.14 x r squared.
So for question 1,
The radius is 3 cm.
We can square the radius ( 3 squared = 9).
After that, 9 x 3.14 = 28.26.

And after that we match our answers on the right hand column. Since we don't have the answer as given, we try to look for similar numbers. If we look at H, it shows us 0.2826 km squared. When cm is turned into km, the decimal moves two digits to its left. So for question 1, H is correct.
You might be interested in
Need help fast!!!!!!
Alex17521 [72]

Answer:

if im correct i think the answer is y=1.25x-0.5

Step-by-step explanation:


7 0
3 years ago
PLEASE HELP!!!!! PLEASE
miv72 [106K]

Answer: d. (if a polygon has congruent angles, then it is regular)

Step-by-step explanation:

Converses follow the format of "if q, then p" (while  the original conditional is "if p, then q")

Just because there are clouds does not mean its raining (cloudy days)

just because it has four equal sides does not make it a square (rhombi have four equal sides but are not squares)

just because you cannot see the sun does not mean it is not daytime (solar eclipses)

if a polygon is regular, it must have congruent angles

4 0
3 years ago
Idek what im doing<br> help please
Svetlanka [38]

Answer:

180 -88 = 92 degrees

Step-by-step explanation:

5 0
2 years ago
Find value of x for 7(3x+4)+2=156
mr_godi [17]
21x + 28 = 156 - 2
21x = 154 - 28
21x/21 = 126/21
X = 6
4 0
3 years ago
Read 2 more answers
Jonael dropped a sandbag from a hot air balloon at a target that is 250 meters below the balloon. At this moment, the sandbag is
abruzzese [7]

Answer:

Please if you don't mind, complete your question thanks

5 0
3 years ago
Other questions:
  • Is the ratio of two odd functions odd
    11·1 answer
  • Which values are solutions of the quadratic equation 0 = (x + 3)2 – 4? Check all that apply.
    5·1 answer
  • What is the range of the function y = RootIndex 3 StartRoot x + 8 EndRoot?
    11·2 answers
  • What is the slope of the line that passes through the points<br><br> (-9, 8) and (-3, -1)?
    15·1 answer
  • All swimming equipment is on sale with a 35% discount. A snorkeling set regularly sells for $60. Find the discount
    6·2 answers
  • Circle X is shown in the diagram.
    9·2 answers
  • The 2nd term of an arithmetic progression is (1/2) and the sum of the first 14th terms is -70. Find
    9·1 answer
  • If the tax rate is 8.3% what is the tax on 196.44
    6·1 answer
  • One leg of triangle is 7 inches longer than the other leg. The hypotenuse is 8 inches longer than the shorter leg. The perimeter
    5·1 answer
  • Solve the equation for x. x/3 + 2/5 = 1/15​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!