Please solve question no.10.

Dear Student,
Please find below the solution to the asked query:
circumference of circle= 2πr=123.2 cmr=123.22×3.14=19.61 cmArea of circle = πr2=3.14×19.612=1207.49 cm2Area of circle = πr2If radisu is doubled then  area of circle = π2r2=4×πr2=4×1207.49 =4829.96 cm2

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