(i) In the given figure (drawn not to scale) chords AD and BC intersect at P, where AB =9 cm, PB=3 cm and PD =2 cm.
(a) Prove that ▵APB ~ ▵CPD.
(b) Find the length of CD.
(c) Find area ▵APB : area ▵CPD.




(ii) Mr. Sameer has a recurring deposit account and deposits Rs 600 per month for 2 years. If he gets Rs 15600 at the time of maturity, find the rate of interest earned by him.

(iii) Using step-deviation method, find mean for the following frequency distribution

Solution

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