GB-25-03-001 · Compound rectilinear area
A 8 cm by 6 cm rectangle is removed from one corner of a 23 cm by 29 cm rectangle. Work out the area of the remaining L-shape.
Shaded / Compound Areas (Subtraction)
Booklet p. 38
Method
1) Identify your two shapes (large rectangle and small cutout)
2) Find the area of each
3) Subtract areas
Worked Example (GB-25-03-001)
1)
Original area 667 cm².
2)
Remove 48 cm².
3)
619 cm²
Ans =
619 cm²