Answer:
0.5s
Step-by-step explanation:
We need the circumference and area of the circle equations:
c = 2*pi*r
a = pi*r^2
lets find the radius from the first equation:
r = c/2*pi
r = 157/(2*3.14)
r = 24.99 ft
now lets calculate the area:
a = pi*r^2
a = 3.14*(24.99)^2
a = 1960.93 ft^2
Now we need to divide the total area by the rate at which Chris paints, and that gives us the time needed:
time = <span>1960.93/400
time = 4.9 hours
that would be 5 hours rounded to the nearest hour</span>
Answer:216.818 miles per hour
Step-by-step explanation:
To convert from feets per second to miles per hour, you multiply by 15/22.
318 x 15/22
(318x15)/22
4770/22=216.818
Area of a Circle : Pi(r)
Area: (3.14)(12
)
Area: 452.16 inches squared.
