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EB = 13 cm
BD = EB*2 = 26cm
L = d1*d2/2
= 30*26/2
= 780/2 = 390 cm persegi
6. a. K = 4*s
= 4*16
= 64 cm
b. L = s*s
= 16*16
= 256 cm persegi
7. K = 2*(p+l)
56 = 2*(7x)
56/2 = 7x
7x = 28
x = 28/7 = 4
sehingga, p = 4*4 = 16 cm, l = 3*4 = 12 cm
8.K.prsg = K.p.pjg
K.p.pjg = 80 cm
K.p.pjg = 2*(p+l)
80 = 2*(p+16)
80/2 = p+16
p+16 = 40
p = 40-16 = 24 cm
9. L.persegi = L.Pesegipanjang
L.persegi = s*s
= 18*18 = 324
L.p.panjang = 324
L.p.pjg = p*l
324 = p*12
p = 324/12 = 27 cm
10. L.taman bunga = L.p.pjg - L.prsgi
L.p.pjg = p*l
= 50*36 = 1800 m persegi
L.prsegi = s*s
= 25*25 = 625 m persegi
L.taman bunga = 1800 - 625
= 1175 m persegi
Maaf kaalu salah hitung, hanay coba membantu, thanks :)
eb:13cmn
bd:eb*2:26cm
l:d1*d²/²
:30x26/2
:780:390 cm persegi