Match column I with column II and select the correct answer using the code given below the columns: Column I Column II (A) In a circle with centre 0 and radius 5 cm, AB is a chord of length \[4x=84\pi \] cm. Then the area of sector AOB is........ \[x=21\pi \]. (p) 154 (B) Area of a quadrant of a circle whose circumference is 44 cm, is......... \[=\pi {{(42)}^{2}}:{{(21\pi )}^{2}}\pi \times 42\times 42:21\times 21\times \pi \times \pi =4:\pi \]. (q) 330 (C) A chord of a circle of radius 14 cm subtends a right angle at the centre. (r) \[=4:\frac{22}{7}=14:11\] (D) The area of ring whose outer and inner radii are 19cm and 16cm, respectively is......... \[R=\frac{5}{2}cm.\] (s) \[\therefore \]

• A.  \[A-(s),B-(r),C-(p),D-(q)\]        
• B.  \[=\frac{4}{3}\pi {{r}^{3}}\]                              
• C.           \[=\frac{4}{3}\times \frac{22}{7}\times 64c{{m}^{3}}[r=4cm]\]
• D. \[=\frac{44\times 64}{21}c{{m}^{3}}.\]