Tentukan luas gabungan bangun datar d bawah ini​

Jawab:

1. Luas gabungan = ( s x s ) + ( 1/2 x a x t )

Lg = ( 15 cm x 15 cm ) + ( 1/2 x 15 cm x 12 cm )

Lg = 225 cm² + 90 cm²

Lg = 315 cm²

2. Luas gabungan = ( p x l ) + ( 1/2 x a x t )

Lg = ( 12 cm x 6 cm ) + ( 1/2 x 10 cm x 6 cm )

Lg = 72 cm² + 30 cm²

Lg = 102 cm²

3. Luas gabungan = ( p x l ) + ( 1/2 x a x t )

Lg = ( 6 cm x 3 cm ) + ( 1/2 x 3 cm x 3 cm )

Lg = 18 cm² + 4,5 cm²

Lg = 22.5 cm²

4. Luas gabungan = ( 12 cm x 8 cm ) + ( 1/2 x 8 cm x 3 cm )

Lg = 96 cm³ + 12 cm²

Lg = 108 cm²

ITU SAJA TERIMA KASIH..