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r-ruslan [8.4K]
1 year ago
6

Find the circumference

Mathematics
1 answer:
lbvjy [14]1 year ago
6 0

Answer:

56.52m is the circumference. The area is 254.34m^{2}

Step-by-step explanation:

The equation for the circumference of a circle is c=2πr with r being the radius. So 2(3.14)(9)=56.52m. The area equation for a circle is A=πr^{2} so it would be (3.14)(9)^2 or (3.14)(81) which equals 254.34m^{2}

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For the ratio hearts to clubs it’s 5:4
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3 years ago
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What time is it on this clock? I can't see it well.
Anna35 [415]

Answer:

10:00

Step-by-step explanation:

7 0
3 years ago
Two welders worked a total of 46 h on a project. One welder made $34/h, while the other made $39/h. If the gross earnings of the
Ratling [72]

Answer:

25 and 21 hours respectively

Step-by-step explanation:

Let the number of hours worked by each welder be x and y respectively.

They worked a total of 46 hours. This means :

x + y = 46 hours.......(I)

Now, given their hourly charges, since we have the total amount of money realized, we can make an equation out of it. This means:

34x + 39y = 1669........(ii)

We then solve both simultaneously. From I, x = 46 -y

We can substitute this into ii

34(46 -y) + 39y = 1669

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5y = 105

y = 105/5 = 21

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x = 46 - 21 = 25 hours

The numbers of hours worked by the welders are 25 and 21 respectively

4 0
3 years ago
You need to estimate 6.849 x 11 I need help please
makkiz [27]
75.339
nearest tenth: 75.3
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8 0
3 years ago
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Given that the sec A = 13/5 and A is in QIV, determine exact value for the sin A.
AysviL [449]

Answer:

The exact value of sin A is opp/hyp = -12/13

Step-by-step explanation:

If A is in Quadrant IV then the "opposite side" is negative and the "adjacent side" is positive.  Since sec A = hyp / adj = 13 / 5 and since opp^2 + adj^2 must add up to hyp^2,   Therefore y = √(hyp^2 - adj^2), or

y = -√(13^2 - 25) = -√144 = 12.

The exact value of sin A is opp/hyp = -12/13

6 0
3 years ago
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