tribeking22
56. CD^2 = AB^2 - (AD - BC)^2 16^2 = 20^2 - (AD - 4)^2 256 = 400 - (AD - 4)^2 (AD - 4)^2 = 400 - 256 AD - 4 = √144 AD - 4 = 12 AD = 12 + 4 AD = 16 cm
Jawaban: C
57. V kubus = 216 r^3 = 216 r = akar pangkat tiga (216) r = 6
Jumlah panjang rusuk balok = jumlah panjang rusuk kubus 4 × (p + l + t) = 12r 4 × (7 + 5 + t) = 12 × 6 12 + t = 72 : 4 12 + t = 18 t = 18 - 12 t = 6 cm
V balok = plt V balok = 7 × 5 × 6 V balok = 210 cm3
16^2 = 20^2 - (AD - 4)^2
256 = 400 - (AD - 4)^2
(AD - 4)^2 = 400 - 256
AD - 4 = √144
AD - 4 = 12
AD = 12 + 4
AD = 16 cm
Jawaban: C
57. V kubus = 216
r^3 = 216
r = akar pangkat tiga (216)
r = 6
Jumlah panjang rusuk balok = jumlah panjang rusuk kubus
4 × (p + l + t) = 12r
4 × (7 + 5 + t) = 12 × 6
12 + t = 72 : 4
12 + t = 18
t = 18 - 12
t = 6 cm
V balok = plt
V balok = 7 × 5 × 6
V balok = 210 cm3
Jawaban: A