tolong jawabin pake cara kakak ini point terakhir kakak
Jawaban:
4a. K = 45cm
L = 81 cm2
4b. K = 36 cm
L = 60 cm2
Penjelasan dengan langkah-langkah:
4a. K = s + s + s
K = 12 + 18 + 15
K = 45 cm
L = 1/2 x a x t
L = 1/2 x 18 x 9
L = 81 cm2
4b. K = s + s + s
K = 13 + 13 + 10
K = 36 cm
L = 1/2 x a x t
L = 1/2 x 10 x 12
L = 60 cm2
