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3 years ago

What is the radius of a circle in which a 30° arc is 2 pi inches long?

Mathematics

2 answers:

Amiraneli [1.4K]3 years ago

7 0

A = C/12 = 2pi r/ 12 = pi r/6 = 2pi
Cancel out pi and you get
r/6 =2 → r=12

Answer: B) 12 inches

kifflom [539]3 years ago

4 0

The answer is 12 inches

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Multiply. 2 1/7 x 3 2/3 Answer with a mixed number in the simplest form

viva [34]

Answer:

7 6/7

Step-by-step explanation:

$2\frac{1}{7}$ × $3\frac{2}{3}$ =

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3 years ago

Larry, Mary, and Terry each had a full glass of juice. Larry drank 3/4 of his. Mary drank 3/8 of hers. Terry drank 7/10 of his.

KiRa [710]

Answer is Mary because
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3 years ago

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Find the area of the parrellogram and the units

gavmur [86]

Answer:

1968

Step-by-step explanation:

A= basexheight

= 48x41

= 1968

Units: If base and height are given in metres, units of area will be m².

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7 0

4 years ago

An ice cream shop sells cones at the volume of 94.2 cubic meters they want to double the volume of the cones without changing th

marin [14]

The volume of a cone is $V=\pi r^2\frac{h}3$ where r = radius and h = height. If the cone has a volume of 94.2 cm³ (I assume you didn't mean m³ because that would be ridiculously huge) and a height of 10 cm, we can plug these values into the formula to find the radius. Don't do any rounding.

$94.2 = \pi r^2\frac{10}3 \\ 282.6 = \pi r^2 *10 \\ 28.26 = \pi r^2 \\ 8.99543738355 = r^2 \\ 2.99923946752=r$

Now we know that's going to be the radius of our new cone as well since we're keeping the diameter the same. The volume is going to be double 94.2 which is 188.4. Let's solve for the height.

$188.4 = \pi (2.99923946752)^2\frac{h}3 \\ 188.4 = \pi(8.99543738355)\frac{h}3 \\ 188.4 = 28.26\frac{h}3 \\ 565.2 = 28.26h \\\\ \boxed{h = 20, r\approx 3}$

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3 years ago

Show on a number line 2/3 's?

Alexxandr [17]

It would be In between 1/2 and 2

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3 years ago