Answer:
see explanation
Step-by-step explanation:
The wheel has a measure of 360° , thus
360° ÷ 20 ( number of cars on the wheel )
= 18° ← central angle
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arc length is calculated as
arc = circumference of wheel × fraction of wheel
= 2πr ×
= 2π × 25 ×
=
≈ 7.85 ft
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area of sector is calculated as
area = area of wheel × fraction of wheel
= π × 25² ×
=
≈ 98.17 ft²