ICSE Class 7 Answered
A circular racing track has imner circumference 528m and outer circumference 616m.find the width of the track
Asked by ritikaprasad026 | 21 Sep, 2020, 05:52: PM
Expert Answer
Circumference of big circle = 616 m
2πr = 616
r = 616 × 7/22 = 14 × 7 = 98 m
Circumference of small circle = 528 m
2πr = 528
πr = 528 × 7/22 = 12 × 7 = 84
width of the track
= Radius of big circle - radius of small circle
= 98 - 84 = 14 m
Answered by Renu Varma | 22 Sep, 2020, 12:14: PM
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