Jawaban:
12.) C. 14 cm
13.) C. 15 cm
Penjelasan dengan langkah-langkah:
12.) rumus keliling segitiga: a + b+ c
K = 19 cm +16 cm +a
49cm = 35 cm + a
49 cm - 35 cm = a
14 cm = a
13.) rumus luas segitiga = 1/2 × alas × tinggi
L = 1/2 × 18 cm × t
135 = 9 cm × t
[tex] \frac{135}{9} = t[/tex]
15 cm = t
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Jawaban:
12.) C. 14 cm
13.) C. 15 cm
Penjelasan dengan langkah-langkah:
12.) rumus keliling segitiga: a + b+ c
K = 19 cm +16 cm +a
49cm = 35 cm + a
49 cm - 35 cm = a
14 cm = a
13.) rumus luas segitiga = 1/2 × alas × tinggi
L = 1/2 × 18 cm × t
135 = 9 cm × t
[tex] \frac{135}{9} = t[/tex]
15 cm = t