(4) 142

Q4. Find the length of the common tangent of two externally touch circle with radius 16 cm and & 9 cm respectively?

(a) 12 cm

(b) 24 cm

(c) 13cm

(d) 28 cm

Q5. ABC is an isosceles triangle a circle is such that it passes through tangent at D for the same circle. AC and BC intersects the circle at E and F respectively AC = BC = 4 cm and AB = 6 cm. Also, D is the mid-point of AB. What is the ratio of EC: (AE + AD)?

(a) 9:7

(b) 3:4

(c) 4:3

(d) 1:3



Q6. The radius of two concentric circles are 17 cm and 10 cm. A straight line ABCD intersects the larger circle at the point A and D and intersects the smaller circle at the points B and C. If BC = 12 cm, then the length of AD (in cm) is? m) is?

(a) 20

(b) 24

(c) 30

(d) 34

In triangle XYZ, G is the centroid. If XY = 11cm YZ = 14cm and xz = 7cm then what is the value (in cm) of GM?

त्रिभुज XYZ में, G केन्द्रक है। यदि XY = 11 सेमी, YZ = 14 सेमी और Xz = 7 सेमी, तो GM का मान (सेमी में) क्या है?

[SSC CGL Mains (20 FEB 2018]

(a) 6

(b)4

(d)3

In a triangle ABC, AB = 12
BC = 18 and AC = 15 The medians AX and By intersect the side BC and AC at X and Y respectively. If AX and BY intersect each other at O, then what is the value of OX?

एक त्रिभुज ABC में, AB = 12 BC = 18 और AC = 15 माध्यिकाएं AX और By क्रमशः भुजा BC और AC को X और Y पर प्रतिच्छेद करती हैं। यदि AX और BY परस्पर O पर प्रतिच्छेद करते हैं, तो OX का मान क्या है?

[SSC CGL Mains 2017 (9) mar 2018]

(a) 4√23

(b) √23

(c) 2√23

(d) √23/√2