Question

Cars
4. Observe the adjacent pie diagram. It
shows the percentages of number of
vehicles passing a signal in a town
between 8 am and 10 am
(1) Find the central angle for each
type of vehicle.
(2) If the number of two-wheelers is
1200, find the number of all vehicles.​

Answer 1

(1) Central angle = 360° × (% of the vehicle/100)

So, central angle of:

Buses = 360° × 8/100 = 28.8°

Auto-rickshaw = 360° × 10/100 = 36°

Tempos = 360° × 12/100 = 43.2°

Cars = 360° × 30/100 = 108°

Two wheelers = 360° × 40/100 = 144°

(2) Total vehicles = 1200

Number of each vehicle = 1200 × (% of the vehicle/100)

So, number of:

Buses = 1200 × 8/100 = 96

Auto-rickshaw = 1200 × 10/100 = 120

Tempos = 1200 × 12/100 = 144

Cars = 1200 × 30/100 = 360

Two wheelers = 1200 × 40/100 = 480

Answer 2

Step-by-step explanation:

total vehicle = 1200

two wheeler = 280