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2 years ago

12

If r is the radius of a circle and d is its diameter which of the following is an equivalent formula for the circumference c = 2

pie r
a C = pie d2
b C = pie rd
c C = pie d
d C = 2 pie d

2 answers:

Ratling [72]2 years ago

8 0

Answer:

C

Step-by-step explanation:

C=2pier or pied

babymother [125]2 years ago

5 0

Answer:

a. C = 2πr

c. C= πd

both are correct

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2 years ago

Mia buys a watch while visiting her cousin in California. The sales tax in California is 10.25%.

netineya [11]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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2 years ago

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How would you solve this? help.

Eddi Din [679]

Answer:

<em>Center: (3,3)</em>

<em>Radius: </em> $2\sqrt{5}$ <em />

Step-by-step explanation:

<u>Midpoint and Distance Between two Points</u>

Given two points A(x1,y1) and B(x2,y2), the midpoint M(xm,ym) between A and B has the following coordinates:

$\displaystyle x_m=\frac{x_1+x_2}{2}$

$\displaystyle y_m=\frac{y_1+y_2}{2}$

The distance between both points is given by:

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Point (5,7) is the center of circle A, and point (1,-1) is the center of the circle B. Given both points belong to circle C, the center of C must be the midpoint from A to B:

$\displaystyle x_m=\frac{5+1}{2}=\frac{6}{2}=3$

$\displaystyle y_m=\frac{7-1}{2}=\frac{6}{2}=3$

Center of circle C: (3,3)

The radius of C is half the distance between A and B:

$d=\sqrt{(1-5)^2+(-1-7)^2}$

$d=\sqrt{16+64}=\sqrt{80}=\sqrt{16*5}=4\sqrt{5}$

The radius of C is d/2:

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2 years ago

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Ierofanga [76]

Answer:

$\large\boxed{4\sqrt[3]{64}=16}$

Step-by-step explanation:

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