Question

7. Area of a circle is 616 sq. m. There is a pathway of 2 m
width outside the circle. find the area of pathway.
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Answer 1

area \: of \: circle = 616 \: {m}^{2} \\ \pi {r}^{2} = 616 \\ {r}^{2} = 196 \\ r = 14

radius with pathway is 16m .

area of whole circle is

\pi \: {r}^{2} = 804.6{m}^{2}  

804.6-616=188.6