Question:
Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.
Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.
Updated On: Nov 16, 2023
Hide Solution
Verified By Collegedunia
Solution and Explanation
Diameter, d = 10.5cm
Radius, r = \(\frac{10.5}{2}\) cm = 5.25 cm
Slant height, l = 10 cm
Curved surface area = \(\pi rl\)
\(= \frac{22}{7} × 5.25 × 10\)
= 165 cm²
Thus, curved surface area of the cone = 165 cm².
Was this answer helpful?
0
0
Top Questions on Surface Area of a Right Circular Cone
- The curved surface area of a right circular cone of height 12 cm and base diameter 10 cm is:
- CUET (UG) - 2023
- Mathematics
- Surface Area of a Right Circular Cone
- In a polyhedron, the number of faces is 4 and the number of edges is 6, then the number of vertices of that polyhedron is:
- CUET (UG) - 2023
- Mathematics
- Surface Area of a Right Circular Cone
- The total surface area of a cone with slant height 21 m and diameter of its base 24 m is
- AP POLYCET - 2020
- Mathematics
- Surface Area of a Right Circular Cone
- A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard. Each cone has a base diameter of 40 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is Rs 12 per m2, what will be the cost of painting all these cones? (Use \(\pi \) = 3.14 and take 1.04 = 1.02)
- CBSE Class IX
- Mathematics
- Surface Area of a Right Circular Cone
- A joker’s cap is in the form of a right circular cone of base radius 7 cm and height 24 cm. Find the area of the sheet required to make 10 such caps.
- CBSE Class IX
- Mathematics
- Surface Area of a Right Circular Cone
View More Questions
Questions Asked in CBSE Class IX exam
- What did his father say to this?
- CBSE Class IX
- My childhood
- The following data on the number of girls (to the nearest ten) per thousand boys in different sections of Indian Society is given below:
Section
Number of girls per thousand boys Scheduled Caste (SC)
940
Scheduled Tribe (ST)
970
Non-SC/ST
920
Backward districts
950
Non-backward districts
920
Rural
930
Urban
910
(i) Represent the information above by a bar graph.
(ii) In the classroom discuss what conclusions can be arrived at from the graph.- CBSE Class IX
- Graphical Representation of Data
- Fig shows the distance-time graph of three objects A, B and C. Study the graph and answer the following questions:
- Which of the three is travelling the fastest?
- Are all three ever at the same point on the road?
- How far has C travelled when B passes A?
- How far has B travelled by the time it passes C?
- CBSE Class IX
- Graphical Representation of Motion
- The text you read is a travelogue where the author, Vikram Seth, talks about his visit to two sacred places in Kathmandu. Imagine that you were with Vikram Seth on his visit to Pashupatinath temple, and you were noting down all that you saw and did there, so that you could write a travelogue later.
Record in point form • what you see when you reach the Pashupatinath temple • what you see happening inside the temple • what you do when inside the temple • what you see outside the temple • what your impressions are about the place.- CBSE Class IX
- Kathmandu
- Sergei says, “I am happy that my words have taken effect.” Why does he say so? Is he right in saying this?
- CBSE Class IX
- The beggar
View More Questions