- A7 cm
- B12 cm
- C6 cm
- D21 cm
Step-by-Step Solution
The 4 cm extra base adds 132 - 84 = 48 sq cm, so height = 48 / 4 = 12 cm. Original base = 84 / 12 = 7 cm.
Answer: A) 7 cm
A parallelogram of area 84 sq cm has its base increased by 4 cm (height unchanged), and the area becomes 132 sq cm.
Find the original base.
Class 7Area of ParallelogramsPerimeter and Area
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Area of Parallelograms practice questions
More Class 7 Area of Parallelograms practice
A parallelogram and a rectangle stand on the same base and between the same parallel…A parallelogram has sides 10 cm and 6 cm. The height corresponding to the 10 cm base is…In a parallelogram, which pair gives a valid base-and-height combination for its area?A parallelogram and a triangle stand on the same base of 14 cm. The parallelogram has…For a parallelogram, the base is (b) cm and the height is (b - 3) cm. If its area is 40…