Question

Tolong dibantu no 3, caranya bagaimana soalnya jawabannya bisa C.

Answer 1

Verified answer

Jawab

ΔABC siku siku di B
<B =90
<C = 60
<A = 30
Perbandingan sisi  AB : BC : AC =  √3 : 1  : 2
AC= 10

AB : AC = √3 : 2
AB = √3/ 2  (AC)
AB = √3 /2 (10) = 5 √3

BC : AC = 1: 2
BC = 1/2 (AC) = 1/2 (10) = 5

Luas PP = AB x BC  = (5 √3)(5)
Luas =  25 √3  = 25 (1,73) 
Luas = 43, 25 cm²