The circumference of the Earth is approximately 25,000 miles. Find the diameter of the Earth.

2 answers:

8 0

The circumference of a circle is expressed as:

Circumference = 2 x pi x r

where r is the radius of the circle and is equal to half of the diameter.

25000 miles = 2 x 3.14 x r
r = 3980.89 miles
r = 7961. 8 miles

The best answer from the choices is B.

Lady_Fox [76]3 years ago

6 0

C= $\pi d$

25000/ $\pi$
= b

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victus00 [196]

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7 0

3 years ago

Help me show work please

masha68 [24]

Step-by-step explanation:

The point-slope form of an equation of a line:

$y-y_1=m(x-x_1)$

m - slope

(x₁, y₁) - given point

$\bullet\ (2,\ 7),\ m=-4\\\\y-7=-4(x-2)\\\\\bullet(-6,\ -2),\ m=3\\\\y-(-2)=3(x-(-6))\to y+2=3(x+6)\\\\\bullet(12,\ 5),\ m=-3\\\\y-5=-3(x-12)\\\\\bullet(7,\ -6),\ m=\dfrac{1}{2}\\\\y-(-6)=\dfrac{1}{2}(x-7)\to y+6=\dfrac{1}{2}(x-7)\\\\\bullet(4,\ -5),\ m=6\\\\y-(-5)=6(x-4)\to y=y+5=6(x-4)\\\\\bullet(-8,\ 2),\ m=-\dfrac{3}{4}\\\\y-2=-\dfrac{3}{4}(x-(-8))\to y-2=-\dfrac{3}{4}(x+8)$