a quarter of a circle is 19.625
so the area of full circle is 19.625 x 4 = 78.5 sq. km
area of a circle is PI x r^2
78.5 = 3.14 x r^2
78.5/3.14 = 25 = r^2
r = sqrt(25) = 5
radius is 5 km
circumference ( perimeter) = 2 x PI x r
2 x 3.14 x 5 = 31.4 km
perimeter is 31.4 km
Answer:
subtract 12 from either sides:
divide either sides by -6, the inequality sign will change:
Step-by-step explanation:
-7(y-1)= 21
-7y+7=21
-7y=21-7
-7y=14
divide by-7
y=-2
2/5=pocket money
whole 5/5
5/5 - 2/5 =3/5
1/3 OF THE REMAINDER transport
1/3 × 3/5 = 1/5
3/5 -1/5 =2/5
Left= 2/5
Ratio of Waitress to hostess money = 45/30 = 3/2
So, the ratio of waitress earning to total earning = 3/5
If they earn 350, waitress will receive = 350 * 3/5 = 210
So, your final answer is $210
Hope this helps!