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| 1. |
The sum of circumference and the radius of circle is 51 cm.find the radius of circle |
| Answer» [2pieR+R=51] [2*22/7*R+R=51] [44/7*R+R=51] [ 44R+7R=51*7] [51R=357] [R=357/51] [R=7cm.] | |