The formula of an area of a circle:
We have R = 6mm and r = 5 mm.
Substitute:
The ratio:
<h3>Answer: 36 : 25</h3>
Perfect application for the Law of Cosines.
c^2 = a^2 + b^2 - 2ab cos C; here we want C, the angle opposite the 14 m side.
(14 m)^2 = (8 m)^2 + (12 m)^2 - 2(8 m)(12 m) cos C
196 = 64 + 144 - 192 cos C
-12 = -192 cos C, or cos C = 0.0625
Then C = arccos 0.0625 = 1.5083 radians
1.5083 radians 180 deg
= ----------------------- * -------------------
1 3.14159 rad
= 86.417 degrees
= 86 degrees, when rounded off as specified.
Answer:
9/4
Step-by-step explanation:
0.25 is one fourth and if you convert the whole number into fourths and add the one fourth from the decimal it is 9/4
The distance travelled by the car will be 3.6km in 2 minutes.
<u>Explanation:</u>
Given:
Speed, s = 108 km/hr
s in km/min = ?
1 hr = 60 min
So,
108 km/hr = 
= 1.8 km/min
time, t = 2 min
Distance, d = ?
We know:
distance = speed X time
Therefore, the distance travelled by the car will be 3.6km in 2 minutes.
Answer:
Every half a hour she is making 3.25 or 6.5 a hour
0.5=3.25 1=6.5, 1.5=9.75, 2=13, 2.5=16.25, 3=19.5, 3.5=22.75 4=26 5=32.5
Step-by-step explanation:
Just take the 19.50 she earned and divide it by the 3 hours she worked to get 6.5 per hour
