A circular Park of 28m diameter has been constructed. A 3.5m circular track outside has been developed along the park. Using algebraic formulae, find the area of the track around the park.
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The outside diameter of the circular path = 28 + 2x3.5 = 35m
The area of the track = π x R² - π x r²
= 22/7 x (35/2)² - 22/7 x (28/2)²
= 962 1/2 - 616
= 346.5 m²
R = Outer radius; r = Inner radius
The area of the track = π x R² - π x r²
= 22/7 x (35/2)² - 22/7 x (28/2)²
= 962 1/2 - 616
= 346.5 m²
R = Outer radius; r = Inner radius
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A circular Park of 28m diameter has been constructed. A 3.5m circular track outside has been developed along the park. Using algebraic formulae, find the area of the track around the park
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