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Galina-37 [17]
3 years ago
6

A circle has a diameter of 10 centimeters.

Mathematics
1 answer:
s344n2d4d5 [400]3 years ago
3 0

Answer:

78.5 (please put brainliest)

Step-by-step explanation:

r = diameter / 2 = 5

area = π * r^2 = 25 * 3.14 = 78.5

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please help me answer this please! I need it fast I need all three of these answers and please show your work! Thank you very mu
mars1129 [50]
15. In a similar figure the sides are proportional. So you have to say which ratio of sides is also proportional or which sides are equal to the fraction 44/35.2

it would be c because :
44/35.2 = 132/105.6

16. same thing with similar triangles. if the length of sides are similar then so is perimeter. So so we find the ratio of the side lengths. We we know sq is 6 and qt is 24. So st is 30. So so the line st and sq are matching and similar so we compare their lengths and get a ratio
sq * x = st
6 * x = 30
x = 5

So so the perimeter is 5 times more than small triangle so
5 * 20 = 100

17.similar side is 0.5 and 3.6 so ratio is 3.6/0.5. we know she is 1.8 talk so
1.8 * 3.6/0.5 = 12.96
5 0
3 years ago
Which angle is complementary to Angle C O D?
zepelin [54]

Answer:

<u>Angle B O C</u>

<u />

Step-by-step explanation:

<em>Complementary angles add up to </em><em>90</em>

<em>Angles COD and BOC form a right angle which means they add up to </em><em>90</em><em>.</em>

<em />

8 0
3 years ago
Read 2 more answers
A student needed to prepare 500mL of 1X TAE buffer to run a QC gel. The stock solution in the lab is 5X TAE. What volumes of sto
Xelga [282]

Answer:

you need 100ml of 5X TAE and 400ml of water.

Step-by-step explanation:

You need to use a rule of three:

C_1V_1=C_2V_2

where:

\left \{ {{C_1= 5X} \atop {C_2=1X}} \right.

and

\left \{ {{V_1 = V_{TAE}} \atop {V_2=500ml}} \right.

Therefore:

V_{TAE} = \frac{V_2*C_2}{C_1}

V_{TAE} = 100ml

Then just rest the TAE volume to the final Volume and you get the amount of water that you need to reduce the concentration.

3 0
3 years ago
Read 2 more answers
Point a is located at -6/8 and point B is located at -1/8 what is the distance between points A and B
Ahat [919]
The distance between points A and B
(-1/8)-(-6/8) = 5/8

6 0
3 years ago
Natalie baked 12 cookies. She
boyakko [2]

Answer:

Her sister ate more cookies.

Step-by-step explanation:

If you convert 3/6 into a simplified fraction, it turns into half. Half of 12 is 6. Natalie ate 3 cookies. Therefore, her sister ate more.

7 0
3 years ago
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