19. Perimeter of triangle ABC is …
Area and primeter triangle
( luas dan keliling segitiga )
18. Area of triangle abc is
rumus : ½ x alas × t
= ½ x 30 x 20 x 15
= 15 x 20 x 15
= 300 x 15
= 4.500
19 . primater of triangle is
rumus : s + s + s
= 15 + 20+ 30
= 35 + 30
= 65 cm
thanks
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