a race track is in the form of a ring whose inner circumference is 396m and outer circumference is 440m. find the width and area of the track.
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Answer: Width = 7.003m, Area = 2927.243m²
Step-by-step explanation:
circumference = 2*PI* r
radius = circumference/ (2 * PI)
RADIUS OF OUTER
440/ (2 x PI) = 70.028m
RADIUS OF INNER
396/ (2 x PI) = 63.025m
width = 70.028 - 63.025
Width = 7.003m
area = PI *r *r
AREA OF OUTER
PI * 70.028 * 70.028 = 15406.122m
AREA OF INNER
PI * 63.025 * 63.025 = 12478.879m
area = 15406.122 - 12478.879
Area = 2927.243m²
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