Mensurationhard · Past Paper
The area of a path of width 2m around a circular pond of radius 8m is:
A36*pi sq. m
B4*pi sq. m
C20*pi sq. m
D100*pi sq. m
✓ Correct Answer: A — 36*pi sq. m
Outer radius = 10, Inner = 8. Path = pi(100 - 64) = 36*pi.
Share this question
More from Mensuration
- If the circumference and area of a circle are numerically equal, the radius is:
- A metallic sphere of radius 10.5 cm is melted and recast into small cones of radius 3.5 cm and height 3 cm. This question relates to volume, but what is the total surface area of the original sphere?
- Area of a circle inscribed in an equilateral triangle of side 6 cm is:
- A cone has a volume of 314 cm^3 and a height of 12 cm. Find its base radius (Take π = 3.14).
- The total surface area of a right circular cone is 90π sq. cm. If its radius is 5 cm, find its slant height.