2009 · Q50
Seven semi-circular areas are removed from the rectangle ABCD as shown in the figure above. In which AB = 2 cm and AD = 0.5 cm. The radius of each semi-circle r, s, t, u, v is half of that of semi-circle p or q. What is the area of the remaining portion?
Elementary MathematicsMensuration
- A(128 – 13 π)/128 cm 2
- B(125 – 13 π)/125 cm 2
- C(128 – 15 π)/128 cm 2
- DNone of these
Explanation
Solved from the figure; answer A.