Jawaban:
16 = 20
17 = tumpul
18 = 8m
19=28m
Penjelasan dengan langkah-langkah:
17. =
A²+B²= C² (siku-siku)
A²+B² > C² (lancip)
A²+B² < C² (tumpul)
A=9 B=7 C=12
9²+7² = 12
81+49=144
130 < 144
50r segitiga tumpul
18= ga bisa di bikin
19= ga bisa di bikin
m² = a² + t²
m² = 12² + 16²
m² = 144 + 256
m² = 400
m = √400
m = 20 cm
12² ... 9² + 7²
144 ... 81 + 49
144 > 130 → segitiga tumpul
a² = 17² - 15²
a² = 289 - 225
a² = 64
a = √64
a = 8 m
Panjang kawat
= √(12² + 8²) + √(12² + 9²)
= √(144 + 64) + √(144 + 81)
= √208 + √225
= 14,4 + 15
= 29,4
= 29 m
BD² = BC² - CD²
BD² = 13² - 12²
BD² = 169 - 144
BD² = 25
BD = √25
BD = 5 cm
AD² = AC² - CD²
AD² = 15² - 12²
AD² = 225 - 144
AD² = 81
AD = √81
AD = 9 cm
AB = BD + AD
AB = 5 + 9
AB = 14 cm
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Jawaban:
16 = 20
17 = tumpul
18 = 8m
19=28m
Penjelasan dengan langkah-langkah:
17. =
A²+B²= C² (siku-siku)
A²+B² > C² (lancip)
A²+B² < C² (tumpul)
A=9 B=7 C=12
9²+7² = 12
81+49=144
130 < 144
50r segitiga tumpul
18= ga bisa di bikin
19= ga bisa di bikin
Nomor 16
m² = a² + t²
m² = 12² + 16²
m² = 144 + 256
m² = 400
m = √400
m = 20 cm
Nomor 17
12² ... 9² + 7²
144 ... 81 + 49
144 > 130 → segitiga tumpul
Nomor 18
a² = 17² - 15²
a² = 289 - 225
a² = 64
a = √64
a = 8 m
Nomor 19
Panjang kawat
= √(12² + 8²) + √(12² + 9²)
= √(144 + 64) + √(144 + 81)
= √208 + √225
= 14,4 + 15
= 29,4
= 29 m
Nomor 20
BD² = BC² - CD²
BD² = 13² - 12²
BD² = 169 - 144
BD² = 25
BD = √25
BD = 5 cm
AD² = AC² - CD²
AD² = 15² - 12²
AD² = 225 - 144
AD² = 81
AD = √81
AD = 9 cm
AB = BD + AD
AB = 5 + 9
AB = 14 cm