1-3 aja kak, mhon bntuan nya:)​

Jawaban:

2. 196 cm²

Penjelasan dengan langkah-langkah:

Lp = La + Ka × t

Lp = ( 1/2×a×t) + ( a+ b + c ) × t

Lp = ( 1/2 × 7 × 8 ) + (8+10+6) × 7

Lp = 28+24×7

Lp = 28 + 168

Lp = 196 cm²