In a right angled triangle ABC, ∠ABC = 90°, D is mid-point of AC and AC = 13 cm. Calculate the length of BD.
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In the following figure, straight lines l, m and n are parallel to each other and G is the mid-point of CD. Find :
(i) BG, if AD = 12 cm
(ii) CF, if GE = 4.6 cm
(iii) AB, if BC = 4.8 cm
(iv) ED, if FD = 8.8 cm