Question

tolong bantu jawab kak​

Answer 1

A. - Keliling = sisi + sisi + sisi

= 3 + 4+ 5

= 12 cm

- Luas = ½ × alas × tinggi

= ½ × (3 × 4) × 5

= ½ × 12 × 5

= ½ × 60

= 30 cm

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B. - Keliling = sisi + sisi + sisi

= 5 + 12 + 13

=30 cm

- Luas = ½ × alas × tinggi

= ½ × (5 × 12) × 13

= ½ × 60 × 13

= ½ × 780

= 390 cm

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C. - Keliling = sisi + sisi + sisi

= 10 + 6 + 8

= 24 cm

- Luas = ½ × alas × tinggi

= ½ × (10 × 6) × 8

= ½ × 60 × 8

= ½ × 480

= 240 cm

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D. - Keliling = sisi + sisi + sisi

= 9 + 15 + 12

= 36 cm

- Luas = ½ × alas × tinggi

= ½ × (9 × 15) × 12

= ½ × 135 × 12

= ½ × 1.620

= 810 cm

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semoga bermanfaat

mohon dihargai dan jangan dihapus ya>