Please yang tau jawabnnya kerjain dong,,, no 1 sampai 5 please,,
dimasrizqi11
1. 10 = 10√2 = 5√2 √2 2 panjanag sisi = 1/√2 . 5√2 = 5 K = 4s = 4.5 = 20 cm L = s.s = 5.5 = 25 cm²
2. diagonal dg perbandingan d² = 3²+4² d² = 9+16 d² = 25 d = √25 d = 5
panajng = 3/5 . 100 = 60 lebr = 4/5 . 100 = 80
K = 2(p+l) = 2(60+80) = 280 m L = p.l = 60.80 = 4800 m²
3. a) t = 3 cm (phytagoras) K = 2(8+5) = 26 cm L = a.t = 8.3 = 24 cm² b) t = 12 (phtagoras) K = 12+9+15 = 36 cm L = 1/2 . a.t = 1/2 . 9.12 = 54 cm² c) sisi miring = 25 dan 30 (phtagoras) K = 25 + 20 + 30 + 45 = 120 cm L = (20+45).24/2 = 65.12 = 780 cm²
4. L = 1/2 . 8.6 = 24 cm² sisi = 10 cm (phtagoras) K = 10.4 = 40 cm
√2 2
panjanag sisi = 1/√2 . 5√2
= 5
K = 4s = 4.5 = 20 cm
L = s.s = 5.5 = 25 cm²
2. diagonal dg perbandingan
d² = 3²+4²
d² = 9+16
d² = 25
d = √25
d = 5
panajng = 3/5 . 100 = 60
lebr = 4/5 . 100 = 80
K = 2(p+l)
= 2(60+80)
= 280 m
L = p.l
= 60.80
= 4800 m²
3. a) t = 3 cm (phytagoras)
K = 2(8+5) = 26 cm
L = a.t = 8.3 = 24 cm²
b) t = 12 (phtagoras)
K = 12+9+15 = 36 cm
L = 1/2 . a.t = 1/2 . 9.12
= 54 cm²
c) sisi miring = 25 dan 30 (phtagoras)
K = 25 + 20 + 30 + 45 = 120 cm
L = (20+45).24/2 = 65.12 = 780 cm²
4. L = 1/2 . 8.6
= 24 cm²
sisi = 10 cm (phtagoras)
K = 10.4 = 40 cm