I need major help on these set theory questions!!!
1 answer:
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Answer:
7π M squared
Step-by-step explanation:
<em>Since a whole circle is 360°, and we need to find 60° of this circle, we are basically wanting to find th of the circle.</em>
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Area is given as 42π M squared, so 1/6th of that is
THus, the area is 7π M squared
Answer:
157.1
Step-by-step explanation:
If you split the blue shape like in the picture, it shows that there is 1 large semicircle and 2 smaller ones.
The area of a semicircle is (pi×radius²)÷2
First, you would find out the area of the large semicircle by substituting in the numbers:
(3.142×10²)÷2=157.1
Then you would find out the area of the smaller semicircle:
The diameter of the semicircle is 10 so to find the radius you would half it.
(3.142×5²)÷2=39.275
To find the area of the whole shape, you would have to take away 39.275 and then add it back on so the answer would be 157.1
Hope this helps :)
Answer:
B. 14
Step-by-step explanation:
The sum of infinite geometric series is given by
0.126126126... =
Here a =126/1000, r= 1/1000
0.126126126... = =126/999 = 14/111
∴ 0.126126126... = 14/111
So, the numerator of the reduced fraction is 14.