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= 22/7 7 50
= 1100
b. Lalas = π r²
= 22/7 7²
= 154
c. s² = r² + t²
t² = s² - r²
t² = 50² - 7²
t² = 2500 - 49
t² = 2451
t = √2451
t = 49,5