4. a) Farmer Ruth has just ploughed 1 of her fields. If the field is 150m long and 80m wide, what is the area of the field in m2
? b) How would you write this measurement in hectares?
5. Calculate the area of each of Farmer Ruth’s fields. Record the area in hectares. Field 1
Field 2
Length – 140m Width – 75m
Field 4
Length – 236m Width – 65m
Length – 130m Width – 90m
Field 5
Length – 294m Width – 57m
Field 3
Length – 175m Width – 83m
Field 6
Length – 306m Width – 43m
6. a) Which of Farmer Ruth’s fields has the greatest area? b) What is the difference in hectares between her largest field and her smallest field?
Area of Irregular Shapes
1. On a piece of tracing paper, draw a rectangle that is 15cm long and 15cm wide. Divide up the rectangle into a grid of square centimetres, like the one below, but with 15 rows.