I'M GIVING OUT BRAINLIEST WHOEVER ANSWERS FIRST!!

(CORRECT ANSWERS ONLY WILL GET BRAINLIEST)

s / ( 2 pi * h) = r

Step-by-step explanation:

s = 2 * pi * r * h

Divide each side by 2 * pi * h

s / 2 pi h= 2 * pi * r * h/ ( 2 pi h)

s / ( 2 pi * h) = r

s over 2×pie×h

Step-by-step explanation:

To get the variable r by itself you need to divide the 2×pie×hr by 2×pie×h. You need to divided both sides to keep the equation true, so divide both sides by 2×pie×h to get: s/2×pie×h.

5

step-by-step explanation:

statement #3: proof- ang is congruent to ang ecd : angles are congruent.  

step-by-step explanation:

1: the missing angles in statement #3  

a.) acb  

reason- the reason why the answer is acb is because angle ecd and angle acb are both the same size *that's what the word congruent means this is really simple.  

2: the missing word in reason #3  

c.) vertical  

reason- the reason why the answer is vertical is because the angles in that diagram on figure 2 is slanted, which is vertical, and the e and a both lay on vertical lines. along with the other's, but e and a are the 2 main points you want to focus on. and c is kind of like your starting point, because c is for both angles, not just one.  

i hope that was and understanding.