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OLEGan [10]
3 years ago
13

If the circumference of the circle is 37.68 units, what is the area? (Use 3.14 for pi .)

Mathematics
1 answer:
solniwko [45]3 years ago
7 0

Answer: 113.04

Step-by-step explanation: The equation for the area of a circle is pi r squared so you have to find the radius first. To find the radius, find the diameter first. A way to do this which was easiest for me was dividing 37.68 by pi (3.14), which is 12. Divide the diameter by 2 to find the radius, 6.

Now use the equation from the beginning, pi r squared. So plug in pi as 3.14, then the radius as 6. It is important to always square the radius first, which would be 36. Now multiply 36 by 3.14, and there should be your answer.

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3 years ago
Julia can finish a 20-mile bike ride in 1.2 hours. Katie can finish the same bike ride in 1.6 hours. How much faster does Julia
Nimfa-mama [501]

We know that,speed = \frac{distance}{time}

Julia can finish a 20-mile bike ride in 1.2 hours.

The distance Julia travels is 20 miles and the time she takes is 1.2 hours.

So, Julia's speed = \frac{20}{1.2} = 16.67 mph


Katie can finish the same bike ride in 1.6 hours.

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So, Katie's speed = \frac{20}{1.6} = 12.5 mph


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So, 16.67 mph - 12.5 mph = 4.17 mph = 4.2 mph (approximately)

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5 0
3 years ago
Read 2 more answers
PLEASE EXPLAIN BECAUSE A GIRL IS COMPLETELY LOST HERE
Afina-wow [57]

Hello!


To find the value of b, we need to use the Law of Sines. The law states,

sin A / a = sin B / b = sin C / c.


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Since angle B is not given, we have to find it ourselves. We can find the measure of angle B by subtracting both the given angle values from 180 degrees because every triangle is equal to 180 degrees.


180 - 55 - 82 = 43 | The measure of sin B = 43 degrees.


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3 years ago
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8 0
3 years ago
I don’t know how to do it
Alenkinab [10]

Answer:

u take 12 x 10=120+12=132 so the

answer is 132

4 0
3 years ago
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