Question

Choose the correct alternative and write its letter :
(i) The areas of two similar triangles are 36 cm2 and 121 cm². The ratio of their
corresponding sides is ..
(A) 36 : 121 (B) 121 : 36 (C) 6:11 (D) 11 : 6
(ii) Out of the following which is the Pythagorean triplet?
(A) (1, 5, 10) (B) (3,4,5) (C) (2, 2, 2) (D) (5, 5, 2)
(iii) If two circles are touching externally, how many common tangents to them can
be drawn?
(A) Three (B) Two (C) One (D) Four
(iv) A cone was melted and cast into a cylinder of the same radius as that of the
base of the cone. If the height of the cylinder is 5 cm, find the height of the
cone.
(A) 15 cm (B) 10 cm (C) 18 cm (D) 5 cm​

Answer 1

Answer:

ratio of sides 6:11

pythagours (3,4,5)

four tangents

height of cone =15cm