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9966 [12]
3 years ago
14

Who wants to be the brainliest? Rearrange the formula C = 2πr for r.

Mathematics
1 answer:
faltersainse [42]3 years ago
8 0

Answer:

B) r= c/2\pi

Step-by-step explanation:

To isolate r, divide 2\pi on both sides

c = 2\pir

--     --

2\pi   2\pi

c/2\pi=r

Hope this helps! :)

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the pie factory sells an apple pie with a diameter of 16 in. for $10.99. What's the approximate cost per square inch of surface
AURORKA [14]
I'm going to assume the crust covered by the dosenot matter because the total surface area cannot be found without the depth of the pie.

So the surface are is the area of the top of the pie, the top of the pie is circular and is equal to 2\pir²

The diameter is the sum of 2 radii, hence r=8

D=12
  = 2r =12
r=8

With the raduis the area can be found
A= 2\pir²
A=2\pi8² 
A=2(64)\pi
A=128\pi

If the pie cost 10.99, the cost per inch can be found by dividing the area by cost

cost/inch =128 \pi/10.99
cost/inch =11.64\pi
               = 11.64(3.14)
               = 36.57

The pie costs 36 cents per square inch
5 0
3 years ago
How many ounces in a half pound
abruzzese [7]
0.5 pounds = 8 ounces
There are 16 ounces in a pound, and you only need half a pound so
16/2 = 8
7 0
3 years ago
Read 2 more answers
Neil has 3 partially full cans of white paint . They contain 1/3 gallon , 1/5 gallon and 1/2 gallon of paint. About how many pai
stepan [7]

Answer:

About 1 gallon. (32/30)

Step-by-step explanation:

First get a LCM (least common multiple) for 3, 5, and 2.

Now we have 30. Make 30 the denominator for all.

10/30

15/30

7/30

Then add them all up to get 32/30.

About 1 gallon.

4 0
3 years ago
Read 2 more answers
I WILL GIVE BRAINLIEST
Vaselesa [24]

Answer:

no

Step-by-step explanation:

80-225*1/3=80-75=5

3 0
3 years ago
Kelvin is making a salad. He can pick between spinach, lettuce, or arugula as the base. He can make it with or without tomatoes,
Sunny_sXe [5.5K]
He can make 27 different salads. Since each individual option has three different salads, and there are 9 options.

Basically multiply the number of total toppings by the number of toppings in each row

Answer: 27
6 0
3 years ago
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