Answer:
141.37 cm
Step-by-step explanation:
If we're going off of the blue shaded region, the area of the full circle is 254.47 cm^2. Then we calculate the area of the inner circle. This gives you 113.1. Now you must subtract the area of the inner circle by the area of the outer circle. 254.47-113.1. This gives you 141.37, which should be your answer.
L=12
W=x
A=168
A=L x W
168=12 x W
168\12=12w/12
W=168/12
W=14
Answer:
45.987
Step-by-step explanation:
Because its the number you get by rounding up
No, because an equilateral triangle is also equiangular so all sides must be 60° (60+60+60=180) and an obtuse angle is more than 90° so the triangle would not be equilateral.
Hope I Helped (:
9514 1404 393
Answer:
3/7
Step-by-step explanation:
The sum of a geometric series with first term a1 and common ratio r is ...
S = a1/(1 -r)
For a1 = 3/4 and r = -3/4, the sum is ...
S = (3/4)/(1 -(-3/4)) = (3/4)/(7/4) = 3/7
The sum of the series is 3/7.
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<em>Additional comment</em>
The terms rapidly decrease in value, so it doesn't take very many terms for the sum to reach the limit of precision available in most calculators. 100 terms are sufficient to give the sum to 12 significant digits.
