itu suruh hitung luas sm keliling bantu jawab ya di kumpulin hari senin pliss
Penjelasan dengan langkah-langkah:
1.
K = 3 x 24 = 72 cm
s = 72/2 = 36 cm
Luàs = √36(36-24)(36-24)(36-24)
= √(36(12)(12)(12)
= √6²(6x2)(6x2)(6x2)
= √(6⁴ x 2² x 2² x 3)
= 6² x 2² √3
= 144√3 cm²
2.
Luas = 10 x 12/2 = 60 cm²
K = 10 + 12 + √(12²+10²)
K = 2(11 + √61) cm
3.
K = 4 x 30 = 120 cm
L = 30 x 30 = 900 cm²
4.
K = 2 x (26 + 14) = 80 cm
L = 26 x 14 = 364 cm²
5.
K = 2 x (40 + 10) = 100 cm
L = 40 x 10 = 400 cm²
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