Mensurationhard · Past Paper
Ratio of area of incircle to circumcircle of a square is:
A1 : 2
B1 : sqrt(2)
C1 : 4
D2 : 1
✓ Correct Answer: A — 1 : 2
Inradius = a/2, Circumradius = a/sqrt(2). Ratio of areas = (a/2)^2 / (a/sqrt(2))^2 = 0.25 / 0.5 = 1/2.
Share this question
More from Mensuration
- What is the area of a square whose perimeter is same as a circle of area 154?
- A rectangle has an area of 48 sq. cm and a length of 8 cm. What is its breadth?
- The area of an equilateral triangle is A. If the side is doubled, the new area is:
- Find the volume of a sphere whose surface area is 154 cm^2.
- The surface area of a sphere is proportional to...