For the first one: A=pi*r^2*1/8 (1/8 becuase we are finding the area of one pane)
A=pi*16/8
A=2pi
For the second one: First do the larger circle minus the smaller circle (pretend they are whole circles)
A(larger)=pi*18^2
=324pi
A(smaller)=pi*8^2
=64pi
A=324pi-64pi =260pi
Now, a whole circle is 360 degrees so 150 degrees is 5/12 of a circle. We take 5/12 of 260pi to get the answer
260pi*5/12=340.3
Answer:216
Step-by-step explanation:
We let x to represent the number of other nuts
Peanut : other
5 : 3
360 : X
Then we cross multiply
5 × x = 360 × 3
5X = 1080
Divide bothside by 5
5X/5 = 1080/5
X = 216
Therefore the number of other nuts in the can is 216.
Answer:
x = 4/5
y = 1/2
Step-by-step explanation:
Answer: A
Step-by-step explanation: if you want me to explain just comment
Answer:
4
Step-by-step explanation:
Let's say B is the number of boys and T is the number of teachers.
T / (B + 18) = 2/21
B/18 = 4/3
Solve the second equation for B.
B = 24
Plug into the first equation to find T.
T / (24 + 18) = 2/21
T = 4
