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Question 5 - Figure it out - Page 150-152 - Chapter 7 Class 8 - Area (Ganita Prakash II)
Last updated at March 13, 2026 by Teachoo
Class 8 (Ganita Prakash - 1, 2 & Old NCERT)
Chapter 7 Class 8 - Area (Ganita Prakash II)
- Area of Rectangle and Square
- Perimeter vs Area
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Figure it out - Page 150-152
- Area of Triangle
- Applications of Area of Triangle Formula
- Triangles between Parallel Lines with a Common Base
- Figure it out - Page 157-159
- Area of any Polygon
- Figure it out - Page 160
- Area of Parallelogram
- Area of Rhombus
- Area of Trapezium
- Figure it out - Page 169-170
- Areas in Real Life
Transcript
Question 5 In this figure, if the sidelength of the square is doubled, what is the increase in the areas of the regions 1, 2 and 3? Give reasons.Let side of square be a Thus, Original area of square = a × a = a2 If side of square is doubled New Side = 2a And, New Area = 2a × 2a = 4a2 Thus, if we double the side length of a square, its area gets 4 times bigger Since the whole square becomes 4 times larger, every single region inside it (Regions 1, 2, and 3) also becomes exactly 4 times larger.
