Answer:
The perimeter of a semicircle includes the arc and the diameter. Here are some formulas that you can use.
Step-by-step explanation:
P = C / 2 + d
where C is the circumference of the whole circle
P = π r + 2r
where r is the radius
P = (2 + π) r
P = (d π / 2) + d
P = d π / 2 + 2 d / 2
P = (d π + 2 d) / 2
P = (2 + π) d / 2
Found at this website here: https://www.quora.com/What-is-the-formula-for-the-perimeter-of-a-semicircle
Hope this Helped! Good Luck!
Answer:
8.944271909999
Step-by-step explanation:
hope you happy
Y-intercept is (0,-7) x-intercept is (14,0)
<u>Answer:</u> False
<u>Explanation / Counterexample:</u> Two lines in a 3-dimensional space can lie in two different planes.
Answer:
1 3/7 quarts should be drained off and replaced with pure antifreeze.
1 3/7 ≈ 1.4286
Current amount of antifreeze in quarts is -
30/ 100 × 10 = 3
40% ---> 4 quarts
Let the amount drained of and replaced with antifreeze be x-
The amount left after draining off is 10 − x.
The amount of antifreeze is 30/ 100 (10−x).
30/100(10-x)+x=4
3-3/10x+x=4
3+x(1-3/10)=4
x=1*10/7=1 3/7 quarts
check;
10- 1 3/7 = 8 4/7
=(30/100*8 4/7)+1 3/7
=(3/10 * 60/7) + 10/7
=3*6/7 + 10/7
=28/7
=4
4 liters of pure antifreeze is mixed into 10 quarts.
