Question

the radius of one circle field is 5cm and that of other is 3m find the radius of the circular field whose area is difference of the area of the first and second field​

Answer 1

Answer:Hence, the radius of the circular field is 12 m.

Step-by-step explanation:Let A1 = the area of the circular field whose radius is 5 m [given] A2 = the area of the circular field whose radius is 13 m [given] Now we have to find the area of circular field such that area is the difference of the areas of first and second field A3 = A2 – A1 ⇒ πr2 = π(13)2 – π(5)2 ⇒ πr2 = π(13)2 – π(5)2 ⇒ πr2 = π[(13)2 – (5)2] ⇒ r2 = 169 – 25 ⇒ r2 = 144 ⇒ r = 12 m Hence, the radius of the circular field is 12 m.

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