Two concentric circles forms a circular track one has a diameter of 28m and other has a diameter of 70 m
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Diameter ( 1 ) = 28 m
Radius = D / 2
=> 28 / 2 m
=> 14 m
Diameter ( 2 ) = 70 m
Radius = D / 2
=> 70 / 2 m
=> 35 m
And as we know that
Area = π ( R² - r² )
=> 22 / 7 ( 35² - 14² )
=> 22 / 7 ( 35 - 14 ) ( 35 - 14 )
=> 22 / 7 × 21 × 21
=> 1386
Area = 1386 m²
Radius = D / 2
=> 28 / 2 m
=> 14 m
Diameter ( 2 ) = 70 m
Radius = D / 2
=> 70 / 2 m
=> 35 m
And as we know that
Area = π ( R² - r² )
=> 22 / 7 ( 35² - 14² )
=> 22 / 7 ( 35 - 14 ) ( 35 - 14 )
=> 22 / 7 × 21 × 21
=> 1386
Area = 1386 m²
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