Mensurationhard · Past Paper
The area of an equilateral triangle is A. If the side is doubled, the new area is:
A2A
B4A
C1.44A
D8A
✓ Correct Answer: B — 4A
Area is proportional to side squared. Doubling the side quadruples the area.
Share this question
More from Mensuration
- What is the volume of a right circular cylinder if its circumference of base is 44 cm and height is 10 cm?
- Volume of a square-based pyramid is 1/3 * a^2 * h. What does 'a' represent?
- A cone and a hemisphere have equal bases and equal volumes. Find the ratio of their heights.
- A wire bent as a square encloses 484 sq. cm. If same wire is bent as a circle, its area is:
- The volume of a cylindrical container is 448π cm³ and its height is 7 cm. Find its curved surface area.