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Answer:
(a) 5852m²
(b) 44m²
Step-by-step explanation:
(a) Area of two concentric circles = 2*value of pie (R²-r²)
= 2 *22/7 (70²-63²)
= {2 *22/7(4900 - 3969)}m²
= {2 *22/7*931}m²
= {2 *22*133}m²
= 5852m²
(b) Radius of inner circle = 63 m
So, circumference = {2*22/7*63}m²
= 396 m²
Radius of outer circle = 70 m
So, circumference = {2*22/7*70}m²
= 440m²
Hence, Difference = 440m² - 396m²
= 44m²
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Answer:
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