The diameter of a circle is 4 m. Find its area to the nearest tenth.
2 answers:
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Answer:
2
Step-by-step explanation:
3/4 + 5/6 (lowest common denominator = 12)
= 9/12 + 10/12
= 19/12
19/12 ÷ 2/3 (reciprocate 2/3 to replace division sign by multiplication sign)
= 19/12 x 3/2
= 57/24
= 19/8
= 2
Hope this helps :)
Answer:
The listener is approximately 71.414 feet far from the whisperer.
Step-by-step explanation:
We must remember that two fundamental variables for every ellipse are the major semiaxis () and the minor semiaxis (
). The major semiaxis equals a half of the length of the whispering gallery, whereas the minor semiaxis equals a half of the width of the whispering gallery. These are:
and
The distance between both whisperers (), measured in feet, is two times the distance between center and any of the foci (
), measured in feet, whose valued is obtained by using this Pythagorean identity:
If and
, then:
The listener is approximately 71.414 feet far from the whisperer.