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Luda [366]
2 years ago
14

The Area of a circle is 46.81cm2 find the length of the radius rounded to 2 DP

Mathematics
2 answers:
ICE Princess25 [194]2 years ago
8 0

Answer:

3.86cm

Step-by-step explanation:

46.81   ÷   3.142 = 14.898154042011457670273711012094

√14.898 = 3.859

3.859 rounded is 3.86cm

EastWind [94]2 years ago
5 0

Answer:3.86

Step-by-step explanation:

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3 years ago
Find the sum of the first six terms of a geometric series in which a1 = 4 and r = -3: A. 729 B. -729 C. -728 D. 728 plz help
natta225 [31]

Answer:

C

Step-by-step explanation:

The sum to n terms of a geometric sequence is

S_{n} = \frac{a_{1}(r^n-1) }{r-1}

Here a₁ = 4 and r = - 3, thus

S_{6} = \frac{4((-3)^6-1)}{-3-1}

    = \frac{4(729-1)}{-4} = - (729 - 1) = - 728 → C

6 0
2 years ago
f the points (-4, 1) and (2, 1) are the endpoints of a diameter of a circle, where is the center? A) (-7, 1) B) (-1, 1) C) (1, -
Ulleksa [173]

Answer:

B

Step-by-step explanation:

The centre is at the midpoint of the endpoints of the diameter.

Using the midpoint formula, then

centre = ( \frac{-4+2}{2}, \frac{1+1}{2} ) = (- 1, 1 ) → B

4 0
2 years ago
Someone please help me!!!!!
jolli1 [7]

Here is your answer wish you good luck

6 0
2 years ago
Please answer asap!!!!!!!!!!!!!!!!!!!!!!!!!
Vilka [71]

Answer:

x=60

Step-by-step explanation:

right angle is 90 degrees +30 degrees equals 120 so 180-120 gives you 60 degrees

4 0
2 years ago
Read 2 more answers
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