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s=√169
s=13 cm
K=4s
=4.13
=52 cm
2.K=30
s=K/4
s=30/4
s=7,5 cm
L=s²
=7,5²
=56,25 cm²
maaf klo salah
Ditanya : K .... ?
Jawab : 169 cm²= s² Jadi K = 4s
√ 169 cm ² = 13 K = 4 x 13
13 cm = s K = 52 cm²
2) Dik : K = 30 cm
Dit : L = ?
Jawab : K = 4s
30 = 4s
30 = s
4
7,5 = s
Luas = sisi x sisi
= 7,5 × 7,5 = 56,25 cm²