1. Finding missing side
-parallelogram

2. Ans: Height of the parallelogram = 45 cm
Example 1:
Find the height of a parallelogram whose area is 540cm2and base is 12 cm.
Solution:
Given: Area(A) = 540 cm Base(b) = 12 cm To find: Height(h)
Area of a parallelogram = b x h sq units
540 cm2 = 12 x h
12 x h = 540 cm2
(transposing 12 to RHS)
h =
270
h =
Divide 540 and 12 with 2 6
135
h =
Divide 270 and 6 with 2 3
h =
Ans: Height of the parallelogram = 45 cm

3. Given: Area(A) = 63m2 , Height(h) = 9m To find: Base(b)
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 To find: Base(b)
Area of a parallelogram = b x h sq units
63m2 = b x 9
b x = 63m2
(transposing 9 to RHS)
b =
b = 7
Ans: Base of a parallelogram = 7 m

4. 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 m2 and height = 30m