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21.98 divided by pi =7.00 rounded to 2 significant figures

Q: Find the diameter of a circle whose circumference is 21.98 cm?

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219.8 you have a decimal there, but simple just take 2198 and devise by 10 2198/10=219.8

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Ok.SO there are 2198 meters in 2.198 km (kilometers) because a kilometer is 1,000 meters, and if you have 2.198 multiplied by 1,000, you get 2198. Hope this helps

157 x 14 = 2198

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157

Two thousand, one hundred ninety-eight.

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Yes.