Answer:
Step-by-step explanation:
The formula of an area of a circle:
r - radius
The formula of a circumference of a circle:
We have the area of a circle
Substitute to the formula and solve for r:
<em>divide both sides by π</em>
Put the value of r to the formula of a circumference:
It is helpful because when you divide numbers that keep on repeating you have to round it to some point and the tenths or hundreths makes it easier to write and for other people to see. Also, you can't write repeating decimals forever you have to stop at some point so rounding to the hundreths helps.
Answer:
i think that the correct answer would A
Step-by-step explanation:
hope this helps
5 milk choc and 8 dark choc....total of 13 chocolates
P(1st pick is milk choc) = 5/13
do not replace
P(2nd pick is milk choc) = 4/12 which reduces to 1/3
P(both picks are milk choc) = 5/13 * 1/3 = 5/39 <== or 12.8%
<1=90=3y-6
3y=96
y=96:3
y=32
9x=6z=90
x=10
z=90:6
z=15
44. BD=AC
2x-1+3y+5=4x-y+1
2x+3y+4=4x-y+1
3y+y+4-1=4x-2x
4y+3=2x
3y+5=2x-1
3y+5=(4y+3)-1
3y+5=4y+2
5-2=4y-3y
y=3
2x=4y+3=4*3+3=15
x=15:2
x=7,5