Mensurationmedium · Past Paper
If the radius of a cone is tripled and slant height is halved, the CSA becomes:
A1.5 times
B3 times
C4.5 times
DEqual
✓ Correct Answer: A — 1.5 times
New CSA = π(3r)(l/2) = 1.5 (πrl). It becomes 1.5 times.
Share this question
More from Mensuration
- What is the total surface area of a cylinder if its base area is 154 sq. cm and its curved surface area is 200 sq. cm?
- The length of a diagonal of a cube is √12 cm. What is its volume?
- Side of a square is 10 cm. Area of the largest circle inside it is:
- What is the area of a parallelogram with a base of 10 cm and a vertical height of 8 cm?
- The perimeter of a square is 20 cm. Find its area.