Pusing pusing huhu math:( tolong bantuan nya ya kakak
anatasyatata
28.) nyerah 29.) L = a.t = 8 cm x 6 cm = 48 cm 30.) ditanya : DB Jawab = √17² - 8² = √289 - 64 = √225 DB = 15 L = d1 x d2 x 1/2 = 16 x 30 x 1/2 = 8 x 30 = 240 cm²
31.) K = 2 x (l+p) 48 = 2 x (9+p) 48 : 2 = 9+p 24 = 9 + p panjang = 15 cm L = p x l = 15 x 9 = 135 cm2
32.) K persegi = 4 x 10 = 40 cm Untuk segitiganya pakai pyhtagoras DC² = √12² + 5² = √144 + 25 = √169 = 13
29.) L = a.t
= 8 cm x 6 cm
= 48 cm
30.) ditanya : DB
Jawab = √17² - 8²
= √289 - 64
= √225
DB = 15
L = d1 x d2 x 1/2
= 16 x 30 x 1/2
= 8 x 30
= 240 cm²
31.) K = 2 x (l+p)
48 = 2 x (9+p)
48 : 2 = 9+p
24 = 9 + p
panjang = 15 cm
L = p x l
= 15 x 9
= 135 cm2
32.) K persegi = 4 x 10
= 40 cm
Untuk segitiganya pakai pyhtagoras
DC² = √12² + 5²
= √144 + 25
= √169
= 13
K segitiga = 13 cm + 13 cm + 10 cm
= 36 cm
K gabungan = 40 cm + 36 cm
= 76 cm