Question

tolong dijawab ya kak:)​

Answer 1

K persegi panjang = K persegi

= 2 x (p + l)

= 2 x (30 + 20)

= 2 x 50

= 100 cm

K persegi :

K = 4 x s

100 = 4 x s

100 = 4 x 25

L persegi :

L = s x s

L = 25 x 25

L = 625 (B.)

Answer 2

B. 625 cm²

Penjelasan dengan langkah-langkah:

Keliling persegi panjang/persegi

K = 2 × (p + l)

K = 2 × (30 + 20)

K = 2 × 50

K = 100 cm

Sisi persegi

K = 4 × s

100 = 4 × s

s = 100 ÷ 4

s = 25 cm

Luas persegi

L = s²

L = 25²

L =