Answer:
16pi cm^2, 112pi cm^3, 351.68 cm^3
Step-by-step explanation:
Given: Height=7cm, radius=4cm
1. The base is a circle and Area of circle = pi * r^2
Plug in the radius to get --> A = pi * (4cm)^2 = 16*pi cm^2
2. This is asking for the volume of the cylinder.
Volume of cylinder is V=h*pi*r^2 --> 7cm * pi * (4cm)^2 = 112 pi cm^3
3. Just plug 3.14 into pi --> 112 * pi cm^3 = 351.68 cm^3
It helps them when they have either really big numbers or really small numbers and so they don't have to use so many zeroes
One way to find the answer is to take Point O and Point Q and add them, setting it to equal 180 so:
(x+17)+(6x-5)=180
Combine like terms:
7x+12=180
Subtract 12 from 180:
7x=168
Then divide 7 to isolate the x:
So then x=24 and you want the measure of ROP so take 24 and add it to 17:
Final answer ROP=41
We can set up a proportion to figure out how many laps out of 200 laps is 57% out of 100%
Cross multiply
The answer is 114 laps.