A) 450 sq. cm
B) 112.5 sq. cm
C) 350 sq. cm
D) 225 sq. cm
Correct Answer: D
Solution :
The shaded portion comprises of four equal triangles with base and height \[\frac{25}{2}\] cm and \[\frac{18}{2}\] cm = 9 cm Area of shaded portion \[=4\left[ \frac{1}{2}\times base\times height \right]\] \[=4\times \frac{1}{2}\,\times \frac{25}{2}\times 9=22\,sq.\,cm\]
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