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The radius of a circular is …

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The radius of a circular is 70m. A 3.5m wide road is built around its outside. What will be the cost of construction of the road, in the rate of cost is Rs.20 per square metre?

Posted by Ayush Kukreti 7 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Shubhangi Bura 7 years, 3 months ago

Circle with r=70+3.5–circle with r=70 = 22÷7×73.5×73.5 –(22÷7×70×70)

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