Page 38 - Steady Mate Tg1 - Book A

Matematik Tingkatan 1 Bab 3 Kuasa Dua, Punca Kuasa Dua, Kuasa Tiga dan Punca Kuasa Tiga

Praktis Berfomat PT3
KANDUNGAN

3
1. Cari panjang, dalam mm, sisi kubus dengan isi padunya (b) Isi padu kubus P ialah 729 cm . Panjang sisi kubus
3
15.625 mm . P adalah tiga kali panjang sisi kubus Q. Apakah
Find the length, in mm, of a side of a cube whose volume is nisbah isi padu kubus P kepada isi padu kubus Q?
15.625 mm . The volume of cube P is 729 cm . Cube P has
3
3
A 1.5 C 2.6 side thrice as long as that of cube Q. What is the ratio
of the volume of cube P to the volume of cube Q?
B 2.5 D 3.9
[3 markah / 3 marks]
2. Nilaikan Jawapan / Answer:
Evaluate Panjang sisi kubus P = 729
3
1 Length of side of cube P
3 91
8 = 9 cm
1 1 Panjang sisi kubus Q 9
A 1 C 3 =
2 2 3
Length of side of cube Q
1 1 = 3 cm
B 2 D 4
2 2 Isi padu kubus Q 3
Volume of cube Q = 3
3. Lengkapkan rajah berikut dengan nombor-nombor = 27 cm 3
yang betul. Isi padu kubus P : Isi padu kubus Q
Complete the following diagram with correct numbers. Volume of cube P : Volume of cube Q
[4 markah / 4 marks] 729 : 27
Jawapan / Answer: 27 : 1

Punca kuasa (c) Rosie ingin menggunakan dawai sepanjang
tiga bagi –64 27 180 cm untuk menghasilkan sebuah rangka kubus
Cube root of 1 000 – 0.008 125
as as as yang berisi padu 3 500 cm . Adakah Rosie dapat
3
Faktor 10 – 4 –0.2 3 berbuat demikian? Justifikasikan jawapan anda.
penghubung 5 Rosie wants to use 180 cm of wire to make a cubic frame
3
Relating factor with the volume of 3 500 cm . Will she able to do so?
Justify your answer. KBAT Menilai
4. (a) Pada ruang jawapan, isi petak kosong dengan [3 markah / 3 marks]
PT3 nombor yang betul. Jawapan / Answer:
In the answer space, fill the boxes with correct numbers. Bilangan sisi sebuah kubus = 12
[4 markah / 4 marks] Number of sides of a cube
Jawapan / Answer:
Panjang sisi kubus = 180
4 16 Length of side of the cube 12
5 + 3 –
9 54 = 15 cm

49 8 Isi padu kubus yang dihasilkan
= + 3 – Volume of cube made = 15 3
9 27
= 3 375 cm 3
7 2
1 2
= + – Rosie tidak dapat berbuat demikian kerana isi padu
3 3 kubus yang dihasilkan kurang daripada 3 500 cm .
3
Rosie will not be able to do so because the volume of
= 1 2 the cube made is less than 3 500 cm .
3
3
© Penerbitan Pelangi Sdn. Bhd. 36