find the radius and diameter of circle if the area is 154sq.cm.
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Area of circle = πr^2
πr^2 = 154 (π =22÷7)
22÷7×r^2 = 154
r^2 = 154×7÷22
r^2 = 1078÷22
r^2 = 49
r = √49
r =7
radius is 7
diameter is 2r = 2×7=14
πr^2 = 154 (π =22÷7)
22÷7×r^2 = 154
r^2 = 154×7÷22
r^2 = 1078÷22
r^2 = 49
r = √49
r =7
radius is 7
diameter is 2r = 2×7=14
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