Math, asked by aashidesai12, 11 months ago

radius of a circle is 1 unit. if the diameter is increased by 100%, its area is increased by what percentage?​

Answers

Answered by AnaNaqvi
4

Answer:

Initial radius = 1 unit

Initial diameter = 2 × 1 = 2 units

Initial area = pi × 1^2 = Pi units

Final diameter = 100% of 2 + 2 = 4 units

Final radius = 4/2 = 2 units

Final area = pi × 2^2 = 4pi

Therefore,

change in area = (4pi -pi)/pi × 100 = 300%

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