Dik:
AD = 10 cm
AB = 10 cm
CD = 8 cm
Dit: Luas dan keliling?
Jawab:
CD = tinggi segitiga
Cari dulu panjang alas segitiga dengan pythagoras untuk mengetahui panjang BC
c² = a² + b²
(10)² = a² + (8)²
a² = 100 - 64
a² = 36
a = 6 cm
BC = AD + 6 cm
BC = 10 cm + 6 cm
BC = 16 cm
L =
L = 26 x 4
L = 104 cm²
K = jumlah seluruh sisi-sisi
K = 10 cm + 10 cm + 16 cm + 8 cm
K = 44 cm
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Dik:
AD = 10 cm
AB = 10 cm
CD = 8 cm
Dit: Luas dan keliling?
Jawab:
CD = tinggi segitiga
Cari dulu panjang alas segitiga dengan pythagoras untuk mengetahui panjang BC
c² = a² + b²
(10)² = a² + (8)²
a² = 100 - 64
a² = 36
a = 6 cm
BC = AD + 6 cm
BC = 10 cm + 6 cm
BC = 16 cm
L =
L =
L = 26 x 4
L = 104 cm²
K = jumlah seluruh sisi-sisi
K = 10 cm + 10 cm + 16 cm + 8 cm
K = 44 cm