2. Tinggi = Luas ÷ Jumlah Sisi Sejajar ÷ = 770 ÷ ( 33 + 37 ) × = 770 ÷ 70 × = 11 × 2 = 22 Cm
3. Luas Daerah Yang Diarsir = Luas Bangun - Luas Segitiga = ( P × L ) - ( × A × T ) = ( 20 × 10 ) - ( × 20 × 10 ) = 200 - ( × 200 = 100 Cm² 4. Luas Segitiga = × Alas × Tinggi = × Alas × ( Alas ÷ 3 )
Tinggi Segitiga = √ Luas ÷ ÷ 3 = √ 294 × ÷ 3 = √ 588 ÷ 3 = √ 196 = 14 Cm Alas Segitiga = Tinggi × 3 = 14 × 3 = 42 Cm
2. Tinggi = Luas ÷ Jumlah Sisi Sejajar ÷
= 770 ÷ ( 33 + 37 ) ×
= 770 ÷ 70 ×
= 11 × 2
= 22 Cm
3. Luas Daerah Yang Diarsir = Luas Bangun - Luas Segitiga
= ( P × L ) - ( × A × T )
= ( 20 × 10 ) - ( × 20 × 10 )
= 200 - ( × 200
= 100 Cm²
4. Luas Segitiga = × Alas × Tinggi
= × Alas × ( Alas ÷ 3 )
Tinggi Segitiga = √ Luas ÷ ÷ 3
= √ 294 × ÷ 3
= √ 588 ÷ 3
= √ 196
= 14 Cm
Alas Segitiga = Tinggi × 3
= 14 × 3
= 42 Cm
5. Luas 3/4 Lingkaran = × × r²
= × × 28²
= × × 784
= × 2464
= 1848 Cm²