# Area of triangle

Finding missing side -parallelogram Example 1: Find the height of a parallelogram whose area is 540cm 2and base is 12 cm. Solution: Given: Area(A) = 540 cm2 Area of a parallelogram Base(b) = 12 cm To find: Height(h) = b x h sq units 540 cm2 = 12 x h 12 x h = 540 cm2 h 540 12 =

(transposing 12 to RHS) 270 h = h h 540 12 6 135 270 = 6 3 Divide 540 and 12 with 2 Divide 270 and 6 with 2 135

45 = 3 Ans: Height of the parallelogram = 45 cm Example 2: The area of the parallelogram is 63m2. Find the base if its height is 9m. Solution: Given: Area(A) = 63m2 , Height(h) = 9m Area of a parallelogram To find: Base(b) = b x h sq units 63m2 = bx9 bx9

= 63m2 b = b = 7 63 9 (transposing 9 to RHS) Ans: Base of a parallelogram = 7 m Try These 1. The area of parallelogram is 70 cm2. Find height if base is 5 cm. 2. Find the base of a parallelogram whose area = 480 m 2 and height = 30m

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