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konstantin123 [22]
3 years ago
9

12. Find the radius of a circle with a circumference of 457 centimeters.

Mathematics
1 answer:
irga5000 [103]3 years ago
6 0

Step-by-step explanation:

Circumference=d\pi\\Circumference=2r\pi

Since we need to find the radius, then we will rearrange the second formula.

Radius=\frac{C}{2\pi }

Radius=\frac{457}{2\pi }

Radius=\frac{457}{6.28}

Radius= 72.8 (rounded)

So, the radius of a circle that has a circumference of 457 is about 72.8 cm

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a circle with a radius of 1 cm sits inside a 3cm x 3cm rectangle. What is the area of the shaded region (the rectangle is shaded
masha68 [24]

Answer:

The area of the shaded region is 5.86\ cm^{2}

Step-by-step explanation:

we know that

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so

A=b^{2} -\pi r^{2}

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Lisa an experienced shipping​ clerk, can fill a certain order in 7 hours. ​bill, a new​ clerk, needs
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Answer:

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Explanation:

In 1 hour, Lisa does 1/7th of the order while Bill does 1/8th of the order in an hour. To find out how long it will take them to fill the order, we have to:

Step 1:

Add the rate of both Lisa and Bill together

1/7 + 1/8

Step 2:

Since both denominators of the fractions are different, you have to find the least common multiple of 7 and 8

7·8= 56    8·7= 56

which is 56.

Step 3:

Then, you have to multiply the numerator of 1/7 with 8 and the numerator of 1/8 with 7.

1·8= 8    1·7= 7

The fractions would now have equal denominators:

Lisa: 8/56    Bill: 7/56

Step 4:

Now, you can add them together

8/56 + 7/56

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Step 5:

15/56 is not the final answer as it is the RATE of them working together. To find how long it will take them total to complete the order, you must divide 56 with 15.

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Answer:

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