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VashaNatasha [74]
4 years ago
8

Help me asap (please please)

Mathematics
1 answer:
CaHeK987 [17]4 years ago
4 0
Area of a circle = pi*r^2.

Here, A = 380.13 mi.  Unfortunately, "mi" is NOT a unit of area.

So I will assume that the problem should read   A = 380.13 sq. miles.
                                                                    380.12 mi^2
Thus,   380.13 mi^2 = 3.14*r^2, and r^2 = ------------------- 121.057 mi^2
                                                                           3.14

The radius is the sqrt of 121.057 mi^2:  11.00 miles.

The diam. is twice that, or d = 22.00 miles.



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Svetradugi [14.3K]

Answer:

its very long but ill help you with the first answer:18.5753424657534247

Step-by-step explanation:

7 0
3 years ago
The perimeter of the rectangular picture frame is 108 mm. Find its length and width if the width is 3 more than twice the length
drek231 [11]

Answer: a=17 mm length

               b=37 mm width

Step-by-step explanation:

P=2a+2b

a -length

b-width

b=2a+3

------------------

108mm=2a+2(2a+3)

108=6a+6

6a=102

a=17 mm

b=17*2+3

b=34+3

b=37 mm

7 0
4 years ago
Solve the inequality k + 3<5​
lina2011 [118]

Answer:

3324333

Step-by-step explanation:

5 0
3 years ago
Find the volume of the cylinder leave your answer in terms of "pie".
Rainbow [258]
To leave something in terms of pi means that you don't have to multiply any numbers by pi when solving; you would just add it to the end. This makes the math much easier to do.

V=pi*r^2*h
V=pi*6.5^2*8
V=338pi

:)
4 0
4 years ago
Find an equation of the circle that has center (6, 2) and passes through (-2,-6).
Irina18 [472]

Answer:

(x - 6)² + (y - 2)² = 128

Step-by-step explanation:

Given as the circle has center ( 6 , 2)

and it passes through points (-2 , -6)

Now , standard equation of circle is (x -a)² + (y- b)² = r²   , where (a , b) is center and r is the radius .

Again from given center the circle equation is

(x- 6)² + (y- 2)² = r²

Now this circle passes through points (-2 , -6)

so, (-2 -6)² + (-6 -2)²  = r²

so, 8²  + 8² = r²

Or, 128  = r²

i.e Radius pf this circle = 8\sqrt{2}

Hence the circle equation formed is

(x- 6)² +( y-2)² = 128   Answer

6 0
3 years ago
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