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Yanka [14]
3 years ago
5

Im doing a project on the London Ferris wheel I know there are 32 carts the Diameter is 120m and the radius is 60

Mathematics
1 answer:
Kobotan [32]3 years ago
3 0

Answer:

circumference = 376.99m

area = 11,309.73m²

the central angle = 11.25°

arc length = 11.78m

area of sector = 353.43 m²

<h3> </h3><h3>Step-by-step explanation:</h3>

Given that,

radius of London Ferris = 60m

1)

circumference of London Ferris = 2 π r

                                                       = 2π 60

                                                       = 120π = 376.99m

2)

Area of London Ferris = πr²

                                      = π(60)²

                                      = 3600π = 11,309.73m²

3)

The central angle of London Ferris

Central angles are angles formed by any two radii in a circle. Here, the     angle between two carts is

32 carts ---> 360°

1 cart ----> 360/32

               = 11.25°

4)

Arc length of London Ferris

An arc is a part of the circumference of a circle. Here we need to find the arc length between 2 carts

360° ---> 2πr

1°      ----> 2πr / 360

11.25° --->2πr(60)(11.25)/360

11.78m

5)

The area of sector

<h3>½ r² ∅</h3>

<em>where r is the radius and ∅ the angle in radians subtended by the arc at the centre of the circle</em>

180° = π

11.25 = π(11.25)/180°            (degree to radians)

         = π/16

1/2 (60)²(π/8)

= 353.43 m²

 

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