Page 70 - Steady Mate Tg1 - Book B

Matematik Tingkatan 1 Bab 10 Perimeter dan Luas

H Cari nilai x dalam setiap rajah yang berikut. TP 3 ARAS S
Find the value of x in each of the following diagrams.

2
Contoh 1. Luas / Area = 48 cm 2. Luas / Area = 27 cm 2
Luas / Area = 36 cm 2

x cm
8 cm
x cm
x cm 9 cm
12 cm
1 × 12 × x = 36 1 × x × 8 = 48 1 × 9 × x = 27
2 2 2
6x = 36 4x = 48 x = 27 × 2
x = 6 x = 12 9
x = 6

Contoh 3. Luas / Area = 84 cm 2 4. Luas / Area = 75 cm 2

Luas / Area = 60 cm 2 x cm 15 cm
10 cm
7 cm x cm
x cm

7 × x = 84 15 × x = 75
10 × x = 60
x = 12 x = 5
x = 6

Contoh 5. Luas / Area = 40 cm 6. Luas / Area = 35 cm
2
2
Luas / Area = 16 cm 2
x cm
10 cm
14 cm
x cm

x cm
1
4 cm × 14 × x = 35
1 × 10 × x = 40 2
1 2 7x = 35
× 4 × x = 16 5x = 40
2 x = 5
2x = 16 x = 8
x = 8

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