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"Smartindia is the best online tool for school students." Ms Deepa Chandran, Principal Anchal
"Smartindia is one of the best supplementary education tool for school students." Ms Pooja, Principal
what is radius and diameter? |
The radius of a circle is the distance from the center of the circle to the outside edge. Usually it represent as 'r'. The diameter of a circle is longest distance across a circle. The diameter cuts through the center of the circle. This is what makes it the longest distance. Usually ir represents as 'd'. ![]() ![]() |