- A0
- B2
- C4
- D6
Step-by-Step Solution
New area = of the old area, a factor of 96%. So the area falls by 100 − 96 = 4%.
Answer: C) 4
The length of a rectangle is increased by 20% while its breadth is decreased by 20%. By what percent does its area decrease?
Competition practiceAreas & Volumes
Master this topic in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Areas & Volumes practice questions
More Areas & Volumes practice
Each edge of a cube is increased by 50%. By what percent does its volume increase?The radius of a sphere is decreased by 10%. By what percent does its surface area…Two triangles are similar and the ratio of their perimeters is 3 : 5. If the area of the…In triangle ABC, the point D lies on AB and E lies on AC so that DE is parallel to BC…The surface areas of two spheres are in the ratio 9 : 16. Find the ratio of their volumes.