Mensurationmedium · Past Paper
The curved surface area of a right circular cone is 12320 sq. cm. If the radius of its base is 56 cm, find its slant height.
A70 cm
B80 cm
C60 cm
D100 cm
✓ Correct Answer: A — 70 cm
CSA = πrl. 12320 = (22/7) * 56 * l. 12320 = 176 * l. l = 12320 / 176 = 70 cm.
Share this question
More from Mensuration
- If 1000 cm^3 of water weighs 1 kg, find the weight of water in a tank of 2m x 1m x 0.5m.
- How many 2 cm x 2 cm square tiles are needed to cover the surface of a cube with side 10 cm?
- How much metal sheet is required to make a closed cylindrical tank of height 1.4 m and base diameter 140 cm?
- The total surface area of a prism with an equilateral triangular base of side 'a' and height 'h' is:
- What is the volume of a right circular cylinder if its circumference of base is 44 cm and height is 10 cm?