Radius of the outer circle is 18 cm and the radius of the inner circle is 7 cm. What is the area of the region between the outer and the inner circles?
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Radius of the outer circle is R = 18 cm
Radius of the inner circle is r = 7 cm.
∴ The area of the region between the outer and the inner circles
= πR² - πr²
= π(R² - r²)
= π(18² - 7²)
= π(18 + 7)(18 - 7)
= π(25)(11)
= 275π cm² ≈ 863.5 cm²
∴ The area of the region between the outer and the inner circles is 863.5 cm²
PLZ MARK AS BRAINLEST..
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