Answer:
22.2
Step-by-step explanation:
Answer:
central angle=18
arc length=2.5 π feet
area of a sector=31.25π square feet
Step-by-step explanation:
Given
wheel radius=25 feet
attached cars=20
Space between cars along the circumference of wheel= 360/20
=18
Finding arc length:
arc length= radius x angle(in radians)
angle in radian = 18 x π/180 = 0.1π radians
arc length = 25 x 0.1π
=2.5π feet
Area of the circle = πr^2
Area of the circle = π(25)^2
Area of the circle = 625π square feet.
As the ratio of the central angle to the full circle angle is proportional to the area of the sector to the complete circle:
central angle/360=area of sector/area of circle
Area of sector= area of circle x 18/360
= 625π(1/20)
=31.25π !
Square has 4 sides so you would use 16 1/8 inches of ribbon per side.
So that's 16 1/8 + 16 1/8 + 16 1/8 + 16 1/8 = 64 4/8 = 64 1/2
Final answer: 64 1/2 inches
Answer:
Step-by-step explanation:
1/4x-5=3/4x-12
1/4x-3/4x=-12+5
-2/4x=-7
x=14
Not sure about the second way
