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Verified answer
L=π×r²=22/7×10,5×10,5
=346,5 ×2 =693 cm²
maaf bila salah
t = 45 cm
L = 2πr(r + t)
L = 2 • 22/7 • 10,5(10,5 + 45)
L = 66(55,5)
L = 3663 cm²