Question

15. Perhatikan gambar berikut! 25 cm 30 cm 35 cm 18 cm Luas bangun datar adalah....​

Answer 1

luas persegi panjang

[tex]l = p \times l \\ = 25 \times 18 \\ = 450 \: {cm}^{2} [/tex]

luas trapesium

[tex]l = \frac{1}{2} t(a + b \\ = \frac{1}{2} 12(25 + 35) \\ = 6 \times 60 \\ = 360 \: {cm}^{2} [/tex]

luas keseluruhan

= luas persegi + luas trapesium

= 450 + 360

= 810 cm²

Answer 2

Jawaban:

L persegi panjang = p × l

= 25 × 18

= 450 cm²

L trapesium = 1/2 × (a + b) × t

= 1/2 × (25 + 35) × (30 - 18)

= 1/2 × 60 x 12

= 360 cm²

Luas bangun datar tersebut adalah...

= 450 + 360

= 810cm²