tolong jawabkan dong.... plies.... no. 1 & 2 thank

1 ) a . Keliling persegi
= 4 × s
= 52 cm
Panjang sisi
= 52 cm ÷ 4
= 13 cm
Luas
= s × s
= 13 cm × 13 cm
= 169 cm2

b . Keliling persegi
= 4 × s
= 60 cm
Panjang sisi
= 60 cm ÷ 4
= 15 cm
Luas
= s × s
= 15 cm × 15 cm
= 225 cm2

c . Keliling persegi
= 4 × s
= 128 cm
Panjang sisi
= 128 cm ÷ 4
= 32 cm
Luas
= s × s
= 32 cm × 32 cm
= 1024 cm2

2 ) Luas persegi panjang
= p × l
= 16 cm × 4 cm
= 64 cm2

Panjang sisi persegi
= √64 cm2
= 8 cm

Keliling persegi
= 4 × s
= 4 × 8 cm
= 32 cm