Tolong jawab ya kaka​

Jawaban:

luas total = luas prsegi panjang + luas trapesium

= 21 x 5 +( 13 + 21 )x 3 ÷2

= 105 + 51

= 156 cm2

L persegi panjang

= p × l

= 21 cm × 5 cm

= 105 cm²

L trapesium

= ½(a + b) × t

= ½(21 cm + 13 cm) × 3 cm

= ½(34 cm) × 3 cm

= 17 cm × 3 cm

= 51 cm²

L total

= 105 cm² + 51 cm²

= 156 cm²

semoga membantu