The radius of one circular field of is 5m and that of other is 3m Find The radius of the circular field whose area is the difference is of the area of first and second field .
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Secondary School Math 5+3 pts
The redius of one circular field is 5m and that of other is 3m.find the radius of the circular field whose area is the difference of the areas of the first and second field
Report by Jyoti6082 16.07.2018
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Let the two circles be A and B
Area of Circle A = π r2 =3.14 x (5)^2
Area of Circle B = π r2 = 3.14 x (3)^2
Total Area = Area of Circle A - Area of Circle B
= 3.14 x (3)^2 π r2 =3.14 x (5)^2 - 3.14 x (3)^2 m^2
... Area of Circle C = 3.14 x (5)^2 - 3.14 x (3)^2 m^2 m2
π r2 =3.14 x r2 = 3.14 x (5)^2 - 3.14 x (3)^2 m^2
πr2 = 3.14 x (25-9)
3.14 x r2 = 3.14 x 16
r^2 = 16 m^2
r = 4m.
Answer:
answer is 4
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