tolong jawabnya no 2dan no3 ajah terimakasih

2) t = 4 cm
p = 2 × 4 = 8 cm
l = 1,5 × 4 = 6 cm
Lp = 2 × ( pl + pt + lt )
= 2 × (8•6 + 8•4 + 6•4 )
= 2 × ( 48 + 32 + 24 )
= 2 × 104
= 208 cm²

3) p = 20 cm
l = 15 cm
t = 10 cm
Lp = 2 × ( pl + pt + lt )
= 2 × ( 20•15 + 20•10 + 15•10 )
= 2 × ( 300 + 200 + 150 )
= 2 × 650
= 1300 cm²
L triplek = p × l
= 50 × 30
= 1500 cm²
Sisa triplek = 1500 - 1300 = 200 cm²