Question

bantu jawab dengan cara pliss besok dikumpul​ ngasal report

Answer 1

Bangun Datar

Persegi Panjang

panjang = p

lebar = ℓ

a.

sisi panjang dua kali sisi lebar

p = 2 ℓ

b.

Keliling = 2(p + ℓ)

K = 2(2 ℓ + ℓ)

K = 2 × 3 ℓ

K = 6 ℓ

c.

K = 90 cm

6 ℓ = 90

ℓ = 90/6

ℓ = 15 cm

p = 2 ℓ

p = 2 × 15

p = 30 cm