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luda_lava [24]
2 years ago
15

The area of circles

Mathematics
1 answer:
Alex73 [517]2 years ago
7 0

Answer:

Formula for the area of a circle;

<h2>A = πr^{2}</h2>

Where 'π' represents pi(3.14 or 22/7), and 'r' represents the radius which is being squared.

Plug in the radius into this formula:-

A = πr^{2}

  • <em>Note: I will be using 3.14 as pi(π).</em>

A = 3.14(4^2)

A = 3.14(16)

A = <u>50.24 centimetres</u> is the area for this circle.

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What is the center of a circle circumscribed about a triangle with vertices (−2, 2) ( 2, −2)and (6, 2)? A. (2, 2) B. (2, 0) C. (
grigory [225]
C. (0,2) if you plot these points correctly on a graph, the center is at 0,2. hope this helped.
6 0
3 years ago
Simplify (3x^-2y^4)^-3
Anuta_ua [19.1K]

Answer:

x^6/27y^12

Step-by-step explanation:

(3. 1?x^2 y^4)^3

(3y^4/x^2)^3

witch you get x^6/27y^12

hope i helped

5 0
3 years ago
2(8a + 5b) -(2a + 3b) Part A: Simplify the expression shown above, and include all necessary work to support your answer. Part B
Alex17521 [72]

Answer:

Total cost = <em>$</em> 4.55

Step-by-step explanation:

2(8a + 5b) -(2a + 3b)

<em>Part A: Simplify the expression shown above</em>

Exapanding the brackets;

16a + 10b - 2a - 3b

Collecting like terms;

16a - 2a + 10b - 3b

14a + 7b

<em>Part B: If a represents apples that cost $0.25 each and b represents bananas that cost SO. 15 each, what is the total cost based on the expression above?</em>

a = 0.25

b = 0.15

14a + 7b

Inserting the values into the equation;

14 (0.25) + 7(0.15)

Total cost = <em>$</em> 4.55

6 0
2 years ago
FREE BRAINLIEST!: (n+2) to the power of 2 - 5a + 1 when n=6 and a=2
BlackZzzverrR [31]

Answer:

55

Step-by-step explanation:

2−5+1+8

11−5

i add 8 because  n is 6 so add 2 it is 8 so i put it in the problem  and got 55

have a nice day and sorry if wrong T_T

6 0
2 years ago
I need help finding the value of n​
Degger [83]
8n+3+9n+7=180
17n+10=180
17n=170
Answer
N=10
6 0
2 years ago
Read 2 more answers
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