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alexandr1967 [171]
3 years ago
9

The area of a circle is 320 square meters. Find the radius of the circle. Then find the circumference. Round your answers to the

nearest tenth.
Mathematics
2 answers:
Ede4ka [16]3 years ago
7 0

Answer:

Radius = 10.1 m

Circumference = 63.4 m

Step-by-step explanation:

Area = 3.14 × r²

320 = 3.14 × r²

r² = 101.9108280255

r = 10.0950893025

Circumference = 2 × 3.14 × r

= 2 × 3.14 × 10.0950893025

= 63.3971608197

VashaNatasha [74]3 years ago
5 0

Answer:

10.1 m =r

C = 63.4 m

Step-by-step explanation:

We know the area of a circle is given by

A = pi r^2  where pi can be approximated by 3.14 and r is the radius

320 = 3.14 r^2

Divide each side by 3.14

320/3.14 = 3.14 r^2/3.14

101.910828 = r^2

Take the square root of each side

sqrt(101.910828) =sqrt( r^2)

10.0950893 = r

To the nearest tenth 10.1 =r

Now we want the circumference

C = 2*pi*r

C =2 *3.14 *10.1

C =63.428

To the nearest tenth

C = 63.4

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AleksAgata [21]

Answer:

3 large doors

Step-by-step explanation:

Given

Board = 12ft

Represent small door with S and large with L

S = 17.5\ in

From the question, we understand that;

L = 2.7 * S

So, we have that

L = 2.7 * 17.5\ in

L = 47.25\ in

Required

Determine the number of Large doors that can be cut from the board

To do this, we simply divide the size of the board by the size of the large cabinet

i.e.

Number = \frac{Board}{L}

Number = \frac{12\ ft}{47.25\ in}

Convert feet to inches

Number = \frac{12 * 12\ in}{47.25\ in}

Number = \frac{144\ in}{47.25\ in}

Number = 3.04761904762

Get the integer part of the decimal

Number = 3

Hence:

3 large doors can be gotten from the board

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3 years ago
The graph of a rational function has local maxima at (-1,0) and (8,0). The complex number 2+3i is a zero of the function. What i
Aneli [31]
Any polynomial's graph cannot have two simultaneous maxima, so they must contain a minima between them. Thus, the total number of turning points of the graph is 3. Generally, when plotting a polynomial, the number of turning points is:
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4 0
3 years ago
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Hey can someone help me :)
Arada [10]
1.
Convert 22 miles to feet.


1 mile = 5280 feet

22 × 5280 = 116,160 feet

2.
To convert this you divide the speed by 60 since there's 60 minutes in an hour
125/60 = 2.0833....

Since you round the answer would be
2.1 miles per minute
6 0
3 years ago
WHAT IS THE LINE OF BEST FIT FOR THE FOLLOWING DATA (1,3) (2,0) (5,-8) (9, -25) . WRITE YOUR ANSWERS IN THE FORM OF Y= AX+ B​
dimulka [17.4K]

Answer:

3.471 + 7.2516 x

Step-by-step explanation:

Given the data:

(1,3) (2,0) (5,-8) (9, -25) .

X:

1

2

5

9

Y:

3

0

-8

-25

The line of best fit for the data given can be obtained using an online regression calculator :

The equation of best fit for the data is thus;

Best fit equation; y = -3.471 + 7.2516x

Intercept = - 3.471 ;

Slope = 7.2516

5 0
3 years ago
6 red marbles out of 36 marbles
Andreyy89

Answer:

1/6

Step-by-step explanation:

P(red) = red/total

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6 0
3 years ago
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