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

Find the missing values in the following table for the circles with radius (r), diameter (d) and Circumference (C). radius (r) diameter (d) Circumference (C) 1760 cm - Mathematics

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Sum

Find the missing values in the following table for the circles with radius (r), diameter (d) and Circumference (C).

radius (r) diameter (d) Circumference (C)
    1760 cm
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Solution

Given: Circumference C = 1760 cm

2πr = 1760

`2 xx 22/7 xx "r"` = 1760

r = `(1760 xx 7)/(2 xx 22)`

= `(160 xx 7)/(2 xx 2)`

= 40 × 7

= 280 cm

diameter = 2 × r

= 2 × 280

= 560 cm

Tabulating the results

radius (r) diameter (d) Circumference (C)
280 cm 560 cm 1760 cm
  Is there an error in this question or solution?
Chapter 2: Measurements - Exercise 2.1 [Page 27]

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Tamil Nadu Board Samacheer Kalvi Class 7th Mathematics Term 2 Answers Guide
Chapter 2 Measurements
Exercise 2.1 | Q 1. (ii) | Page 27

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