25. (a) Solve the following quadratic equation for x and give your answer correct to two decimal places:- x2 − 3x − 9 = 0 (Type in the answers separated by commas. Leave no spaces around the commas.)   26. (b) Using a ruler, construct a triangle ABC with BC = 6.4 cm, CA = 5.8 cm and ∠ABC =60° . Draw its incircle. Measure and record the radius of the incircle.   27. (c) Mrs. Kumar has an account with The Bank of India. The following entries are from her pass book:- Date Particulars Withdrawals Rs. P. Deposits Rs. P. Balance Rs. P. 08.02.06 B/F -- -- 8500.00 18.02.06 To self 4000.00 -- ..... 12.04.06 By cash -- 2238.00 ..... 15.06.06 To self 5000.00 -- ..... 08.07.06 By cash -- 6000.00 ..... Complete the above page of her pass book and calculate the interest for the six months, February to July 2006, at 4.5% per annum. (Type in the answers separated by commas. Leave no spaces around the commas.)