Answer:
94.2 cm
Step-by-step explanation:
Circumference is the diameter x pi. Multiple 30 x 3.14
Answer:
Volume of sphere = 4.186 cubic inches
Step-by-step explanation:
Radius of sphere = r = 1 inch
Volume of sphere = ?
The formula used is: ![Volume\:of\:sphere=\frac{4}{3}\pi r^3](https://tex.z-dn.net/?f=Volume%5C%3Aof%5C%3Asphere%3D%5Cfrac%7B4%7D%7B3%7D%5Cpi%20r%5E3)
Putting value of radius and π and finding volume:
![Volume\:of\:sphere=\frac{4}{3}\pi r^3\\Volume\:of\:sphere=\frac{4}{3}\times 3.14\times (1)^3\\Volume\:of\:sphere=\frac{4}{3}\times 3.14\times (1)^3\\Volume\:of\:sphere=4.186 \:cubic\:in](https://tex.z-dn.net/?f=Volume%5C%3Aof%5C%3Asphere%3D%5Cfrac%7B4%7D%7B3%7D%5Cpi%20r%5E3%5C%5CVolume%5C%3Aof%5C%3Asphere%3D%5Cfrac%7B4%7D%7B3%7D%5Ctimes%203.14%5Ctimes%20%281%29%5E3%5C%5CVolume%5C%3Aof%5C%3Asphere%3D%5Cfrac%7B4%7D%7B3%7D%5Ctimes%203.14%5Ctimes%20%281%29%5E3%5C%5CVolume%5C%3Aof%5C%3Asphere%3D4.186%20%5C%3Acubic%5C%3Ain)
So, Volume of sphere = 4.186 cubic inches
I take the second equation <span>x=5y+2
and substitute x in the first one:
means instead of
y = x + 5
y = (5y+2) + 5
I think you have to choose second answer
</span>
10 + 8c= 42
subtract 10 from both sides
8c= 32
divide both sides by 8
c= 4
CHECK
10 + 8(4)= 42
10 + 32= 42
42= 42
ANSWER: c= 4
Hope this helps! :)