this is the correct answer.
Answer:
The distance between them after 30 minutes is 6.5 km.
Step-by-step explanation:
Speed =
Sarah's speed = 6 km/hr = 1.6667 m/s
Emily's speed = 10 km/hr = 2.7778 m/s
The measure of angle between their bearings =
After 30 minutes (1800 seconds);
distance = speed x time
Sarah would have covered a distance = 1.6667 x 1800
= 3000 m
= 3 km
Emily would have covered a distance = 2.7778 x 1800
= 5000 m
= 5 km
The distance between them, a, can be determined by applying the cosine rule;
= + - 2bcCos A
= + -2(5000 x 3000) Cos 105
= + -2(5000 x 3000) x (-0.2588)
= 2.5 x + 9 x + 7764000
= 41764000
a =
= 6462.5073
a = 6462.5 m
The area of the figure is 104.52 sq inches
In the complete figure, we have:
1 Rectangle: Base = 8 in and Height = 6 in
2 semicircles: Diameter = 6 inches
The area of the figure is
Area = Area of rectangle + Sum of Areas of semicircles
This gives
Area = Base * Height + 2 * π(d/2)^2
Area = 8 * 6+ 2 * 3.14 * (6/2)^2
Evaluate
Area = 104.52
Hence, the area of the figure is 104.52 sq inches
Read more about areas at:
brainly.com/question/24487155
#SPJ1
Me