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4 years ago

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]

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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]

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Step-by-step explanation:

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b-width

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4 years ago

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Step-by-step explanation:

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3 years ago

Find the volume of the cylinder leave your answer in terms of "pie".

Rainbow [258]

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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

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3 years ago