PQRS is a parallelogram (Fig 11.23). QM is the height from Q to SR and QN is the height from Q to PS. If SR = 12 cm and QM = 7.6 cm. Find: (a) the area of the parallelogram PRS (b) QN, if PS = 8 cm

Given: SR = 12 cm, QM= 7.6 cm, PS = 8 cm.
(a) Area of parallelogram = base x height
= 12 x 7.6 = 91.2 cm²
(b) Area of parallelogram = base x height
⇒ 91.2 = 8 x QN
⇒ QN = 91.2/8 = 11.4 cm

Class 7 Maths Chapter 11 Exercise 11.2

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