SOLUTION: 25 cent - a quarter is 3/4 inch in diameter. When placed 7 feet from eye, it blocks the disc of moon. Diameter of the moon is 2160 miles. How far is the moon from the earth?

Question 627805: 25 cent - a quarter is 3/4 inch in diameter. When placed 7 feet from eye, it blocks the disc of moon. Diameter of the moon is 2160 miles. How far is the moon from the earth?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
25 cent - a quarter is 3/4 inch in diameter.
When placed 7 feet from eye, it blocks the disc of moon. Diameter of the moon is 2160 miles. How far is the moon from the earth?
;
Using the rule of similar triangles
:
Convert 7 ft to 84 inches
let d = distance to the moon
:
A ratio equation
=
Cross multiply
.75d = 2160*84
d =
d = 241,920 miles to the moon

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