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Question
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 |
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