Q1 (a) In fig. (i) given below, AD ⊥ BC, AB = 25 cm, AC = 17 cm and AD = 15 cm. Find the length of BC.

(b) In figure (ii) given below, BAC = 90, ADC = 90, AD = 6 cm, CD = 8 cm and BC = 26 cm. Find :

(i) AC
(ii) AB
(iii) area of the shaded region.

(c) In figure (iii) given below, triangle ABC is right angled at B. Given that AB = 9 cm, AC = 15 cm and D, E are mid-points of the sides AB and AC respectively, calculate

(i) the length of BC (ii) the area of ∆ADE.

Solution

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