Answer:
1715= 1/3 x 3.14 x r x r x 63
= 65.94 x r^2
÷65.94
26.01 = r^2
Square root
Radius is 5.1
1080 = 1/3 x 3.14 x 5.1^2 x h
1080 = 27.22 x h
÷27.22
39.67 = h
(Haven't been actually rounding up in my calculation, when I divided.)
Check:
1/3 x 5.1^2 x 39.67 x 3.14 = 1079.968146.
So, height is about 39.67cm
Hope this helps!
The answer to the question is b
You use the Pythagorean theorem which is a^2+b^2=c^2
So....
.8^2+.6^2=c^2
.64+.36=c^2
1=c^2
1=c becaaue the square root of one is one
Distributeiv
a(b+c)=ab+ac
distribute
9(k-2/3)=9k-18/3=9k-6
now we have
0=9k-6+33
simplify
33-6= 27
0=9k+27
minus 27 both sides
-27=9k
divide 9
-3=k
D. certain, because 1 means that 100% of the time the spinner will land on blue, meaning it doesn't land on anything else.