GEOMETRY
DIKETAHUI
L ABCD = 196 cm²
sisi = 14 cm
JAWAB
(14 - r)² + (14 - r)² = (14 + r)²
r = 42 ± 28 × sqrt(2)
r < 14
r = 42 - 28 × sqrt(2)
L warna merah
L = L persegi - L biru - L kuning
L = 196 - (¼ × 22/7 × 14 × 14) - (22/7 × (42 - 28 × sqrt(2)²)
L = 196 - 154 - (10472 - 7392 × sqrt(2))
L = 7392 × sqrt(2) - 10430 cm²
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Verified answer
GEOMETRY
DIKETAHUI
L ABCD = 196 cm²
sisi = 14 cm
JAWAB
(14 - r)² + (14 - r)² = (14 + r)²
r = 42 ± 28 × sqrt(2)
r < 14
r = 42 - 28 × sqrt(2)
L warna merah
L = L persegi - L biru - L kuning
L = 196 - (¼ × 22/7 × 14 × 14) - (22/7 × (42 - 28 × sqrt(2)²)
L = 196 - 154 - (10472 - 7392 × sqrt(2))
L = 7392 × sqrt(2) - 10430 cm²