Question

Tolong jawab pakai cara ya...

Answer 1

2. keliling persegi = 4s
64 = 4s
s = 16 cm

luas persegi = s² = 16² = 256 cm² (d)

3.luas persegi = s²
36 = s²
s = 6
diagonal = 6² + 6² =c²
maka c = √9×8 = 6√2 cm (c)

4. keliling persegi = 4s
keliling = 4 × 12
=48 cm
keliling persegi panjang = 2(p+l)
48-2 × 6 =36 : 2 = 18
berarti panjang persegi panjang = 18 cm (b)

5. tripel phytagoras = 20 cm
keliling = 20+21+29
=70cm (c)

6. t = 8
luas trapesium (a+b):2 × t = (9+21):2×8
=15×8 =240 cm² (c)

7. luas jajargenjang = at
=7.4 =28cm (c)

semoga membantu ^^!