3. 坐標平面上﹐直線x = 2分別交函數y = log10x﹐y = log2x的圖形於P﹑Q兩點﹔直線x = 10分別交函數y = log10x﹐y = log2x的圖形於R﹑S兩點﹒試問四邊形PQSR的面積最接近下列哪一個選項﹖(log102