Tamil Nadu Board of Secondary EducationSSLC (English Medium) (5 to 8) Class 7

A wheel of a car covers a distance of 3520 cm in 20 rotations. Find the radius of the wheel? - Mathematics

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Sum

A wheel of a car covers a distance of 3520 cm in 20 rotations. Find the radius of the wheel?

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Solution

Distance covered by circular wheel in 20 rotation = 3520 cm

∴ Distance covered in rotation = `3520/20  "cm"` = 176 cm

∴ Circumference of the wheel = 176 cm

∴ 2πr = 176

`2 xx (-2)/6 xx "r"` = 176

r = `(176 xx 7)/(2 xx 22)`

r = 28 cm

Radius of the wheel = 28 cm

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Chapter 2: Measurements - Exercise 2.4 [Page 39]

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Tamil Nadu Board Samacheer Kalvi Class 7th Mathematics Term 2 Answers Guide
Chapter 2 Measurements
Exercise 2.4 | Q 1 | Page 39

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