Penjelasan dengan langkah-langkah:
LAT.UL
1. <BAD = 37°
<BCD = 180° – <BAD
<BCD = 180° – 37°
2. Luas = 3,14 × 10² + 20 × 30
2
Luas = 314 + 600
Luas = 157 + 600
Keliling = 3,14 × 20 + 20 + 30 × 2
Keliling = 62,8 + 20 + 60
Keliling = 31,4 + 80
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Penjelasan dengan langkah-langkah:
LAT.UL
1. <BAD = 37°
<BCD = 180° – <BAD
<BCD = 180° – 37°
<BCD = 143°
2. Luas = 3,14 × 10² + 20 × 30
2
Luas = 314 + 600
2
Luas = 157 + 600
Luas = 757 cm²
Keliling = 3,14 × 20 + 20 + 30 × 2
2
Keliling = 62,8 + 20 + 60
2
Keliling = 31,4 + 80
Keliling = 111,4 cm