- A
- B
- C
- D
Step-by-Step Solution
= √(49 + 576) = √625 = 25 cm. The cap has no base, so sheet = CSA = . (528 uses ; 704 adds a base that the cap does not have.)
Answer: B)
A joker's cap is a cone of base radius 7 cm and height 24 cm. How much sheet is needed to make one cap? (π = )
Class 9Surface Area of a ConeMensuration
Master this chapter in 30 minutes a day.
Don't just memorise the answer — build a daily practice habit.
Practice 5 Similar Questions Free →All Surface Area of a Cone practice questions
More Class 9 Surface Area of a Cone practice
Why do we use only the curved surface area (not the total surface area) for the sheet in…A conical tent is 10 m high and the radius of its base is 24 m. What is its slant height?An ice-cream wafer cone has radius 2.1 cm and slant height 5 cm. How much wafer is used…Two cones have the same base radius, and their slant heights are in the ratio 4 : 5.…Both the radius and the slant height of a cone are doubled. By what factor does the…