In circle P, BC = 24 ft. What is the length of ABC?
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OpenStudy (anonymous):
OpenStudy (anonymous):
hey @megsweg19 !
OpenStudy (anonymous):
hi! @tylermcmullen23 !
OpenStudy (anonymous):
ok to find the measurement, do 2*pi*12*330/360
OpenStudy (anonymous):
69.08
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OpenStudy (anonymous):
well, i got 69.1 using regular pi, but still! yes
OpenStudy (anonymous):
For abc?
OpenStudy (anonymous):
or apc?
OpenStudy (anonymous):
abc
OpenStudy (anonymous):
|dw:1427284634894:dw|
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OpenStudy (anonymous):
the formula is 2*pi*r*central angle/360
OpenStudy (anonymous):
so now that I have 69.1 what do I do?
OpenStudy (anonymous):
thats your answer!
OpenStudy (anonymous):
that's not an option for an answer
OpenStudy (anonymous):
33p
11p
22p
44p
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OpenStudy (anonymous):
then divide 69.1 by pi
OpenStudy (anonymous):
22p
OpenStudy (anonymous):
you get 22p
OpenStudy (anonymous):
The ratio of the length of the corresponding sides of two rectangles is 5:8. The area of the smaller rectangle is 130 m2. To the nearest whole number, what is the area of the larger rectangle?
OpenStudy (anonymous):
answer options are
333 m2
19 m2
129 m2
32 m2
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OpenStudy (anonymous):
divide 8 by 5 then multiply 26
OpenStudy (anonymous):
I got 41.6?
OpenStudy (anonymous):
then multiply that by 8
OpenStudy (anonymous):
332.8 so im guessing you round it to 333 m2?
OpenStudy (anonymous):
yes
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OpenStudy (anonymous):
Find the area of the kite
OpenStudy (anonymous):
48 ft2
144 ft2
288 ft2
96 ft2
OpenStudy (anonymous):
do 8*12
OpenStudy (anonymous):
96
OpenStudy (anonymous):
then do 8*6 and add the 96 to that
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OpenStudy (anonymous):
144
OpenStudy (anonymous):
thx so much you are a life saver
OpenStudy (anonymous):
no problem!
OpenStudy (anonymous):
A metal washer is made by cutting out a circle 13.2 mm in diameter from a larger circle. To the nearest tenth, what is the area of the washer?
OpenStudy (anonymous):
547.1 mm2
972.6 mm2
243.3 mm2
60.8 mm2
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OpenStudy (anonymous):
first, do 4.4*2
OpenStudy (anonymous):
8.8
OpenStudy (anonymous):
then add that to 13.2
OpenStudy (anonymous):
22
OpenStudy (anonymous):
divide that by 2 to get the radius (11) and then put that to the power of 2
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OpenStudy (anonymous):
121?
OpenStudy (anonymous):
multiply that by pi
OpenStudy (anonymous):
379.94?
OpenStudy (anonymous):
wait, is it supposed to be in pi form?
OpenStudy (anonymous):
no its in milimeters
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OpenStudy (anonymous):
oh
OpenStudy (anonymous):
ok well now, divide 13.2 by 2 to get the radius of the hole, which is 6.6. square that by 2 to get 43.56 then multiply that by pi to get 136.77, subtract that from 379.94