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66 = ( 8 + 14 ) × t × 1/2
66 = 22 ×1/2 × t
66 = 11 × t
Tinggi = 66 ÷ 11 = 6 cm
= 1/2 x (8+14) x t
= 1/2 x 22 x t
= 11 x t
66 = 11 x t
t = 66/11
t = 6 cm
panjang kaki
dengan mengambil bagun segitiga di salah satu sisi....maka didaptkan tinggi 6 dan alas 3..
cari dengan menggunaakan phytagoras menjadi
r² = 6² + 3²
r² = 36 + 9
r² = 45
r= √45
r = 3√5