Step 1: Calculate the area: \(A = length \times width = 12.5 \times 8.2 = 102.5 \text{ cm}^2\). Step 2: Determine significant figures. Both measurements (12.5 and 8.2) have 3 significant figures. In multiplication, the answer should have the same number of significant figures as the measurement with the fewest significant figures. Both have 3 s.f., so our answer must have 3 s.f. Step 3: Round 102.5 to 3 s.f. All four digits (1, 0, 2, 5) are already significant, giving us 4 s.f. We need to round to 3 s.f., which means keeping 1, 0, 2 and checking the next digit (5). Since 5 ≥ 5, round UP: 102 becomes 103. Therefore, Area = 103 cm². This type of practical application question is very common in ECZ Paper 2, where you must show both calculation and proper rounding.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• Dickson Tembo – 1 pts

• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• Area of Rectilinear Figures
• Distance of A Straight Line