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L = 2500 dm²
s² = 2500 dm²
s = √(2500 dm²)
s = 50 dm
Sisinya adalah 50 dm
Nomor 2.
L = p x l (Persegi panjang)
96 = p x 8
p = 96 / 8
p = 12 cm
p = 1,2 dm
Nomor 3.
L = p x l
L = 14 cm x 5 cm
L = 70 cm²
L = 70.000 mm²
Nomor 4.
Untuk jajargenjang,
L = a x t
100 = 20 x t
t = 100/20
t = 5 cm
t = 0,05 m
2. panjang = Luas : lebar = 96 : 8 = 12 cm = 1,2 dm
3. Luas persegi panjang = panjang x lebar = 14 x 5 = 70 = 7000
4. tinggi = Luas : alas = 100 : 20 = 5 cm = 0,05 m