Kak tolong bantuin no 5, 6, 7, dan 11, terima kasih Kalau dijawab semua dan benar semua aku tandai jawaban terbaik, diperiksanya hari Selasa

no.5
Rumus = 2 x L.alas + K.alas × t

L.alas = (Bangun trapesium)
L.alas = 1/2( a + b) × t

mencari T trapesium = (phytagoras)
t* = c* - a*
t* = 10* - 6*
t* = 100 - 36
t*= 64
t= 8 cm

L.alas = 1/2 (a+ b) x t
= 1/2.(7 + 13) × 8
= 1/2 x 20 × 8
= 10 x 8
=80cm*

K.alas = 7 + 10 + 13 + 8 = 38 cm

L. bangun =
= 2 x L.alas + K.alas × t
=2 x 80 + 38 × 30
= 160+ 1140
= 1.300 cm*