Answer:
49 pi
Step-by-step explanation:
I'll assume you want to know how big the carpet is. You need to find the area of the room, which is a circle. The area of a circle is given as pi*r^2, where r is the radius. The diameter is twice the radius, so as the problem gives us a diameter of 14, the radius would be 7. Plug in 7 for r, and we get 49pi.
There is a right triangle with you in the lower left vertice, and the right angle between the sides 50 (vertical segment) and 200 (horizontal segment)
Then, tan (angle of elevation) = vertical / horizontal = 50/200 = 0.25
=> angle = arc tan(0.25) = 14 degress.
Answer: 14 degrees
6. instead of multiplying by 4/3 it would be 2/3 because it is half a sphere.
9. you should have multiplied by pi first then multiply by 4/3 to make it more easy for you
