Let length of rectangular plot be 4 m and width be 10 m
Area = lb = 40m2
After length is increased by 25%, new length = 5m
New width if area is same =\(\frac{40}{5}=8\) m
Therefore, Reduction in width =\(\frac{(10-8)}{10}\times100\)
The correct answer is (D): Reduced by 20%
From one face of a solid cube of side 14 cm, the largest possible cone is carved out. Find the volume and surface area of the remaining solid.
Use $\pi = \dfrac{22}{7}, \sqrt{5} = 2.2$