tolong dong dibantu no. 35-38 mksih

35
[tex]18 + 18 + 24 + 24 \\ = 84[/tex]

35) a=24,b=18,c=24,d=18
Kj= a+b+c+d
= 24+18+24+18
= 84 cm
36) Kt= a+b+c+d
= 30+13+20+13
= 76 cm
37) Kl= πd
= 22/7 . 49
= 22.7
= 154 cm
38) ac= 18, bo= 6, ao= 9
ab²= 9²+6²
ab²= 81+36
ab²= 117
ab= √117
ab= 3√13 cm
Lb= s.s
= 3√13 . 3√13
= 9.13
= 117 cm²