- For shape 1, the area is calculated by dividing it into two rectangles: one 3cm x 5cm (15 cm²) and another 7cm x 5cm (35 cm²), totaling 50 cm². The perimeter is the sum of all outer sides: 10cm + 7cm + 5cm + 4cm + 5cm + 3cm = 34 cm.
- For shape 2, the area is found by subtracting a smaller rectangle (2mm x 4mm = 8 mm²) from a larger one (8mm x 10mm = 80 mm²), resulting in 72 mm². The perimeter sums all outer edges: 6mm + 2mm + 4mm + 6mm + 10mm + 8mm = 36 mm.
- For shape 3, the area is computed by splitting into two rectangles: 9m x 5m (45 m²) and 8m x 3m (24 m²), totaling 69 m². The perimeter adds all sides: 5m + 6m + 8m + 3m + 13m + 9m = 44 m.
- For shape 4, the area is determined by combining two rectangles: 8cm x 5cm (40 cm²) and 6cm x 4cm (24 cm²), totaling 64 cm². The perimeter sums all outer edges: 9cm + 6cm + 4cm + 2cm + 5cm + 8cm = 34 cm.
Parent Tip: Review the logic above to help your child master the concept of area and perimeter worksheets with answers pdf.
