Question 3 - Figure it out (Page 162-164) - Area of Parallelogram - Chapter 7 Class 8 - Area (Ganita Prakash II)

Transcript

Question 3 - Figure it out (Page 162-164) Find QN.To find BY, we find Area of Parallelogram PQRS using Height QM, Base SR Or Height QN, Base PS Area of Parallelogram PQRS using QM & SR Now, Base = SR = 12 cm Height = QM = 6 cm Thus, Area of PQRS = Base × Height = SR × QM = 12 × 6 = 72 cm2 Area of Parallelogram PQRS using QN & PS Now, Base = PS = 7.6 units Height = QN = ? Area of PQRS = 72 cm2 Thus, Area of PQRS = Base × Height Area of PQRS = PS × QN 72 = 7.6 × QN 72 = 76/10 × QN 72 × 10/76 = QN QN = 72 × 𝟏𝟎/𝟕𝟔 QN = 18 × 10/19 QN = 180/19 QN = 9.47 cm (approx.)