When it comes to the **Quantitative Aptitude** section of the **CAT exam**, Geometry is the second most important topic and hence, needs to be covered very thoroughly. One way to go about this preparation is to practice questions from **CAT previous year paper** and get a hang of the kind of questions you can expect in the **CAT Question Paper**. Ace your **CAT preparation online** with this question from Geometry from CAT 2020 question paper. Don't look at the solution provided before trying them out yourself.

Question 21 : Let C1 and C2 be concentric circles such that the diameter of C1 is 2cm longer than that of C2. If a chord of C1 has length 6 cm and is a tangent to C2, then the diameter, in cm of C1 is

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The line from the center bisects chohrd of length 6

into 3 and 3. Since the triangle is of 3, r and r +1

Triplet of triangle 3,4 and 5

r = 4, r + 1 = 5 (radius of C1)

Diameter of C1 = 10

The question is **"Let C1 and C2 be concentric circles such that the diameter of C1 is 2cm longer than that of C2. If a chord of C1 has length 6 cm and is a tangent to C2, then the diameter, in cm of C1 is" **

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