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Gnesinka [82]
3 years ago
12

Work out circumference of a circle radius is 14

Mathematics
2 answers:
Triss [41]3 years ago
7 0

Answer:

87.96

Step-by-step explanation:

the formula to solve this is

c = 2\pi \: r \\

btw

scoundrel [369]3 years ago
3 0

Answer:

87.96

Step-by-step explanation:

Circumference = π * 2r

π*2(14) = 87.96

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Q 1.) Expand using identities:<br>i. (a+2b)²<br>ii. (5x-3y)²<br>iii. (3a+4)(3a-4)(9a²+16)<br>​
Ganezh [65]

Step-by-step explanation:

#1.

(a + 2b)²

<em>Using identity (x + y)² = x² + 2xy + y², we get:</em>

= (a)² + (2b)² + 2 × (a) × (2b)

= a² + 4b² + 4ab

= a² + 4ab + 4b² Ans.

#2.

(5x - 3y)²

<em>Using identity (a - b)² = a² - 2ab + b², we get:</em>

= (5x)² + (3y)² - 2 × (5x) × (3y)

= 25x² + 9y² - 30xy

= 25x² - 30xy + 9y² Ans.

#3.

(3a + 4)(3a - 4)(9a² + 16)

<em>Using identity (x + y)(x - y) = x² - y², we get:</em>

= [(3a)² - (4)²][9a² + 16]

= (9a² - 16)(9a² + 16)

= (9a²)² - (16)²

= 81a⁴ - 256 Ans.

4 0
2 years ago
Find the hupotenuse if the legs are 3 and 4
natita [175]

Answer:

None of these

Step-by-step explanation:

hypotenuse \\  =  \sqrt{ {3}^{2} +  {4}^{2}  }  \\  =  \sqrt{9 + 16}  \\  =  \sqrt{25}  \\  = 5

3 0
3 years ago
Read 2 more answers
Classify the following number. Select all that apply.<br>-3 IrrationalRationalIntegerWholeNatural
SOVA2 [1]
-3 is a irrational,integer
8 0
3 years ago
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(x-1)2 + (y + 3)2 = 73<br> What is the center ?
Olenka [21]

Answer:

centre = (1, - 3 )

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

(x - 1)² + (y + 3)² = 73 ← is in standard form

with (h, k ) = (1, - 3 ) ← centre

3 0
2 years ago
Here's a problem for the minds-good luck!
Art [367]

Answer:

20%

Step-by-step explanation:

  1. Set up a proportion: \frac{280}{1400} = \frac{x}{100}  
  2. Cross multiply, then divide: 280 × 100 = 28000, 28000 ÷ 1400 = 20
  3. So, 20% were satisfied with their car

I hope this helps!

8 0
2 years ago
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