bantu jawab no.34-36 ya yang bisa. Makasi. GBu!

34.
s = 8 cm
s/2 = 4 cm
tl = 3 cm
tt = √3²+4² = √9+16 = √25 = 5 cm

lp = s² + 2xttxs
= 8² + 2x5x8
= 64 + 80
= 144 cm² ( b )

35. r1 = rusuk awal
r2 = 2 x r1
V1 = volume awal
V2 = 2 x Volume awal

Volume = 320 x 2² = 960 cm³ ( b )

36. keliling trapesium ( k ) = 12+10+17+18 = 57 cm
luas alas = (12+18)/2 x 10 = 300/2 = 150 cm²
luas permukaan = 2xluas alas + keliling alas x tinggi
= 2 x 150 + 57 x 10
= 300 + 570
= 870 cm² (c)