( 36 - 10 ) ÷ 2
26 ÷ 2
13 cm
√ [ 13² - (10 ÷ 2)²
√ ( 169 - 25 )
√ 144 cm
12 cm
½ × 10 × 12
60 cm² (D)
Keliling segitiga = x + x + 10
36 = 2x + 10
36 - 10 = 2x
26 = 2x
x = 13 cm
alasnya dibagi 2 jadi panjangnya 5 cm dan sisi miring nya 13 cm
mencari tinggi segitiga= akar 13^2 - 5^2 = akar 169 - 25 = akar 144 = 12 cm
Luas segitiga = 1/2 x a x t = 1/2 x 10 x 12 = 60 cm^2
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Panjang sisi miring
( 36 - 10 ) ÷ 2
26 ÷ 2
13 cm
Tinggi
√ [ 13² - (10 ÷ 2)²
√ ( 169 - 25 )
√ 144 cm
12 cm
Luas
½ × 10 × 12
60 cm² (D)
Keliling segitiga = x + x + 10
36 = 2x + 10
36 - 10 = 2x
26 = 2x
x = 13 cm
alasnya dibagi 2 jadi panjangnya 5 cm dan sisi miring nya 13 cm
mencari tinggi segitiga= akar 13^2 - 5^2 = akar 169 - 25 = akar 144 = 12 cm
Luas segitiga = 1/2 x a x t = 1/2 x 10 x 12 = 60 cm^2