Question

No 16,17,18 pake cara ya
Gambarnya jelas kok !!
Ada kok jawabannya!!
cuman cari point jangan jawab!!

Answer 1

16. CE = 5cm
(DE)^2 = (13)^2 - (5)^2
(DE)^2 = 169 - 25 = 144
DE = 12 = tinggi
Luas = jumlahsisisejajar x tinggi /2
= (10+15) x 12 / 2
= 25 x 6
= 150 cm^2 (A)

17. (a)^2 = (15)^2 - (10)^2
(a)^2 = 225 - 100 = 125
a = v125
a = v(25x5) = 5 v5 cm (B)

18. 60° dari 360°
Luas = (60/360) x 22/7 x r^2
= (1/6) x 22/7 x (21)^2
= 231 cm^2 (A)