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scZoUnD [109]
3 years ago
9

PLEASE HELP I really need it so please can you help me answer 1-18, please and PLEASE DONT GIVE DUM ANSWERS LIKE Things to know

when you answer:
Find the area of each circle and enter the answer in the space below. Use 3.14 for π and round your answers to the nearest hundredth if needed.
The formula for calculating the area of a circle is A = π​r​2 where pi (π) equals 3.14 and the radius (​r​) is half the diameter.

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
8 0

Answer:

Here is all of them \^o^/  just add mm²

Step-by-step explanation:

1. 380.13

2. 615.75

3. 254.47

4. 3.14

5. 615.75

6. 38.48

7. 19.63

8. 78.54

9. 95.03

10. 50.27

11. 38.48

12. 3.14

13. 78.54

14. 314.16

15. 380.13

16. 63.62

17. 706.86

18. 0.79

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If x = 5, find the value of<br> a) x2<br> b) (x + 3)2
PtichkaEL [24]

Answer: a) = 10

b) = 16

Step-by-step explanation:

a) as x = 5 so putting the value of x in given equation

5 multiplied by 2 is equal to 10

b) Putting value of x in given equation

= (5 + 3) 2

According to BODMAS solve the brackets first

= 8 x 2

= 16

3 0
3 years ago
There are 143076 books in the library. The 3rd grade class walked over and each kid checked out 2 books. There are 21 students i
9966 [12]

Answer:

The answer is: There are only 143034 books left after the students return to their classroom

Step-by-step explanation:

Lets call X= Number of books left in the library after the students return to their classroom.

B=Total of Books in the library

S=Total of books taken by the 3rd grade students

If each student  of the 3rd grage class take 2 books, the total of book taken by the 3rd grade students would be:

S=2 books per student * Total of students of the 3rdgrade

S=2*21=42

Then we must substract Total of Books in the library minus Total of books taken by the 3rd grade students. That would be:

X=B-S

X=143076-42

X=143034

I hope that this answer will help you

7 0
3 years ago
An important proportion that the ancient Greeks used was the ______
Lubov Fominskaja [6]
Evaluation. Is an proportion that the Greeks used.


6 0
3 years ago
The ratio of red tulips to all tulips in Briana's garden is 1 to 3. Is it reasonable to think that the total number of tulips in
Anestetic [448]
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8 0
3 years ago
Find x. Round your answer to the nearest tenth of a degree.
77julia77 [94]
This is the concept of trigonometry, the value of x will be calculated as follows;
sin theta=[opposite]/[hypotenuse]
theta=x
opposite=16 units
hypotenuse=21 units
thus;
sin x=16/21
hence;
x=arcsin(16/21)
x=49.63
x=50 (to the nearest degrees)

8 0
3 years ago
Read 2 more answers
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