Find the radius and diameter of a circle in cm whose area is 15400mm^2
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Answer:
R=70,Diameter=140
Step-by-step explanation:
Pi×r^2=15400
or,r^2=15400×7/22
or,r^2=4900
or,r=√4900
or,r=70
Radius=70
We know diameter=2 × radius
Diameter=2×70=140
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