Berapa luas permukaan tanah seperti gambar?
Materi : Bangun Datar
L( ½ Lingkaran + Segitiga )
L = ½ × π × r² + ½ × d × t
L = ½ × 22/7 × 21 × 21 + ½ × 42 × √1.159
L = 11 × 3 × 21 + 21√1.159 cm²
L = 11 × 63 cm² + 21√1.159 cm²
{ L = ( 693 + 21√1.159 ) cm³ }
Semoga bisa membantu
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