Question

Tolong jawab semuaaaaaaaa​pllis

Answer 1

No. 1 → Segilima

No. 2 → 10

No. 3 → Segitiga sama sisi

No. 4

sisi miring (s)

s² = 8² + 10²

s² = 64 + 100

s = √164

s = 2√41

→ keliling

= 8 + 10 + 2√41

= 18 + 2√41 cm

→ luas

= a × t : 2

= 10 × 8 : 2

= 80 : 2

= 40 cm²

No. 5

→ keliling

= 2 ( p + l )

= 2 ( 20 + 15 )

= 2 × 35

= 75 cm

→ luas

= p × l

= 20 × 15

= 300 cm²

No. 6

→ sisi

=√luas

=√144

= 12 cm

→ keliling

= 4 × s

= 4 × 12

= 28 cm

No. 7

K = 2(p+l)

120 = 2(40+l)

120 : 2 = 40 + l

l = 60 - 40 → l = 20 cm

No. 8

K = 4 × s

80 = 4 × s

s = 80 : 4 → s = 20 cm

No. 9 → Segi enam

No. 10

a × t : 2 = L

a × 44 : 2 = 1320

44a = 1320 × 2

a = 2640 : 44 → 60 cm

No. 11

Luas taman

= p × l

= 20 × 10

= 200 m²

No. 12

Lebar taplak

= Luas : panjang

= 150 000 : 150

= 1000 cm

= 10 m

No. 13

→ Keliling

= 4 × s

= 4 × 20

= 80 m

→ Luas

= s²

= 20²

= 400 m²

No. 14

→ mempunyai empat sisi sama panjang

→ mempunyai empat sudut sama besar

→ membentuk empat sumbu simetri lipat