Question 31
Mensuration of Plane ShapesIn the diagram, WXYZ is a rectangle with dimension 8 cm by 6 cm. P, Q, R and S are the midpoints of the sides of the rectangle as shown. Calculate the area of the part of the rectangle that is not shaded.
- A.25 cm2
- B.24 cm2
- C.16 cm2
- D.12 cm2
Show the answer and explanation
Answer: B (24 cm2)
Explanation
The four corner triangles each have area ½ × 4 × 3 = 6 cm², so the unshaded part is 24 cm² (half of 48).