Keliling = Alas + 2 sisi miring
88 = 24 + 2S
88 - 24 = 2S
64 cm = 2 sisi miring
sisi miring = 64 / 2
= 32 cm
Luas = 1/2 x 32 x 24
= 384 cm
→ luas segitiga dg rumus Heron ←
s = keliling/2 = 88/2 = 44 cm
kaki segitiga = (88 - 24)/2 = 32 cm
sisi segitiga → 32, 32, 24
L = √(s(s - 32)(s - 32)(s - 24))
L = √(44 . 12 . 12 . 20)
L = √(12² . 4 . 5 . 4 . 11)
L = √(12² . 4² . 55)
L = 12 . 4√55
L = 48√55 cm² ✔
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Keliling = Alas + 2 sisi miring
88 = 24 + 2S
88 - 24 = 2S
64 cm = 2 sisi miring
sisi miring = 64 / 2
= 32 cm
Luas = 1/2 x 32 x 24
= 384 cm
→ luas segitiga dg rumus Heron ←
s = keliling/2 = 88/2 = 44 cm
kaki segitiga = (88 - 24)/2 = 32 cm
sisi segitiga → 32, 32, 24
L = √(s(s - 32)(s - 32)(s - 24))
L = √(44 . 12 . 12 . 20)
L = √(12² . 4 . 5 . 4 . 11)
L = √(12² . 4² . 55)
L = 12 . 4√55
L = 48√55 cm² ✔