Question

perhatikan bangun berikut luas bangun di atas adalah​

Answer 1

Jawab:

Luas1 (kiri) = (1/2 x 10 x (8+3)) - (1/2 x 10 x 3)

= (1/2 x 10 x 11) - (1/2 x 10 x 3)

= 55 - 15

= 40 cm²

Luas2 (kanan) = (1/2 x 6 x (8+3+2)) - (1/2 x 6 x (3+2))

= (1/2 x 6 x 13) - (1/2 x 6 x 5)

= 39 - 15

= 24 cm²

L total = 40+24 = 64 cm²