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Verified answer
R = 14 cmLuas tutup = π.r²
= 22/7 x 14 x 14
= 22 x 2 x 14
= 616 cm²
bagian yang tidak di cat warna biru = (1 - 1/2) x 616 cm²
= 1/2 x 616 cm²
= 308 cm²
bagian yang tidak di cat warna hijau = (1 - 4/8) x 616 cm²
= (1 - 1/2) x 616 cm²
= 1/2 x 616 cm²
= 308 cm²