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GaryK [48]
2 years ago
5

the central angle of an arc measures 12. the radius of its circle is 30 inches. what is the length of the arc to the nearest qua

rter inch
Mathematics
1 answer:
Katarina [22]2 years ago
4 0
IF the central angle is in degrees then the
arc length = (12 / 360) * circumference
arc length = (1 / 30) * 2 * PI * 30
arc length = 2 * PI inches
arc length = <span> <span> <span> 6.28 inches

Source:
http://www.1728.org/radians.htm

</span></span></span>
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Math answer plz need help with this plz answer
Neporo4naja [7]

Answer:

176.625 sq.ft, 4.8 sq.ft

Step-by-step explanation:

Area of circle=πr^2 or πd^2/4
11. Given,
d=15 ft
Now,
Area=πd^2/4
3.14*15^2/4
176.625 ft^2
Therefore, the area approximation is 176.6 sq.ft
12.
Given,
d=3.5 ft
Now,
Area= πd^2/8
3.14*3.5^2/8
4.8 sq.ft
I got the answer by dividing the area of circle by 2 as semicircle is half of circle.

6 0
2 years ago
On a number line, what is x-4&lt;-3?
goblinko [34]

Add 4 to both sides

x - 4 < -3

x-4+4 < -3+4

x < 1

To graph this on a number line, plot an open circle at 1 on the number line. Do not fill in the open circle. Shade to the left of the open circle. The shaded region represents all x values smaller than 1.

The graph is shown below.

3 0
3 years ago
Meg initially has 3 hours of pop music and 2 hours of classical music in her collection. Every month onwards, the hours of pop m
zlopas [31]

Answer:  Option 'd' is correct.

Step-by-step explanation:

Since we have given that

Number of hours of pop music = 3

Number of hours of classical music = 2

According to question, Every month onwards, the hours of pop music in her collection is 5% more than what she had the previous month. Her classical music does not change.

Rate of increment = 5% = 0.05

Let the number of months be 'x'.

So, our required function becomes,

f(x)=3(1+0.05)x+2\\\\f(x)=3(1.05)x+2

Hence, Option 'd' is correct.

3 0
2 years ago
Moscow, the capital city of Russia, is at 37.62 degrees longitude and 55.75 degrees latitude. Brasilia, the capital city of Braz
Vsevolod [243]

Answer:

drfcexdw

Step-by-step explanation:

8 0
2 years ago
Find the length of the base of a square pyramid if the volume is 128 cubic inches and has a height of 6 inches.
Gennadij [26K]
128 divided by 6
= 21.3
8 0
3 years ago
Read 2 more answers
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