Question

3.berapa luas daerah yg diarsir pada gambar diatas
pake cara ya?

Answer 1

T. segitiga = akar 13^2 - 5^2
= akar 169 - 25
= akar 144
= 12 m
L. segitiga = A x T /2
= 5 x 12/2
= 60/2 = 30
T. trapesium = 26 - 20/2
= 6/2 = 3 m
= akar 5^2 - 3^2
= akar 25 - 9
= akar 16
= 4 m
L. trapesium = (s1+s2) x t /2
= (26+20) x 4 /2
= 46 x 4 /2
= 184 /2 = 92
L. gambar yg diarsir
= 2 x L.segitiga + L. trapesium
= 2 x 30 + 92
= 60 + 92 = 152 m
maaf kalo salah..