Circumference + perimeter =38
x = circumference of circle
find r in terms of x
2
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
r=x
r=
![\frac{x}{2 \pi }](https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B2%20%5Cpi%20%7D%20)
Area=
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
r^2
so..
A=
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
(
![\frac{x}{2 \pi }](https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%7D%7B2%20%5Cpi%20%7D%20)
)^2
=
![\pi](https://tex.z-dn.net/?f=%20%5Cpi%20)
(
![\frac{x^{2} }{4 \pi ^{2} }](https://tex.z-dn.net/?f=%20%20%5Cfrac%7Bx%5E%7B2%7D%20%7D%7B4%20%5Cpi%20%5E%7B2%7D%20%7D%20%20)
)
=
![\frac{x^{2} }{4 \pi }](https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%5E%7B2%7D%20%7D%7B4%20%5Cpi%20%7D%20)
(38-x) is perimeter
then
![\frac{38-x}{4}](https://tex.z-dn.net/?f=%20%5Cfrac%7B38-x%7D%7B4%7D%20)
(
![\frac{38-x}{4}](https://tex.z-dn.net/?f=%20%5Cfrac%7B38-x%7D%7B4%7D%20)
)^2
![\frac{x^{2} }{4 \pi }](https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%5E%7B2%7D%20%7D%7B4%20%5Cpi%20%7D%20)
+ (
![\frac{38-x}{4}](https://tex.z-dn.net/?f=%20%5Cfrac%7B38-x%7D%7B4%7D%20)
)^2
then you graph it and it equals
16.716 cm the circumference of the circle
17% are lions, 3/10 = 30% are zebras, therefore the remaining 100 - 47 = 53% of animals are tigers.
Mode 17,
Mean is 19.3
Median 18.
x/110 = (320-x)/90
<span> Cross multiply</span>
90x = 35200-110x
200x=35200
X = 35200/200 = 176 (distance traveled by train going 110 mph
176/110 = 1.6 hours = 1 hour and 36 minutes
Check: 110*1.6 = 176, 90*1.6 = 144
176+144 = 320
it will take 1.6 hours ( 1 hour 36 minutes) for the trains to meet
Answer:
£124
Step-by-step explanation:
first of all, you're meant to add all the figures given on the pie chart, which is 29+137+58+62+74 and that will give you a total of 360 degrees
so, you say 360 degrees is equal to the total amount of money he spent, which is £720, what about 62 degrees
therefore, you just do (62×720)÷360
that will give you £124