Luas segitiga dimana a=15cm b=13cm dan c=10cm adalah...cm

Bab Segitiga

Luas segitiga = √(s(s - a)(s - b)(s - c))
dengan
s = 1/2 × Keliling

s = 1/2 × (a + b + c)
s = 1/2 × (15 cm + 13 cm + 10 cm)
s = 1/2 × 38 cm
s = 19 cm

Luas
= √(19(19 - 15)(19 - 13)(19 - 10))
= √(19(4)(6)(9))
= 2 × 3 √(19 × 6)
= 6√114 cm^2

s = 1/2 ( a + b + c)
s = 1/2 (15 + 13 + 10)
s = 19

L = akar (s (s-a)(s-b)(s-c)
L = akar (19(19-15)(19-13)(19-10))
L = akar (19(4)(6)(9))
L = 2 x 3 x akar (19 x 6)
L = 6 akar 114 cm2