tolong dijawab yaa: please

1.) a.)
k = 2 × (p + l)
56 = 2 × (4x + 3 + 3x - 3)
56 = 2 × (7x)
56 = 14x
x = 4

1.) b.)
L = p × l
= (4x + 3) × (3x - 3)
= (4 × 4 + 3) × (3 × 4 - 3)
= 19 × 9
= 171 cm²

2.)
L lahan = p × l
= 6 × 9,5
= 57 m²

Hasil penjualan tanah = 57 × 425.000 = Rp24.225.000,-

3.) a.)
8x + 2 = 90°
8x = 88°
x = 11

3.) b.)
3x - 3
= 3 × 11 - 3
= 33 - 3
= 30°