answer the question✔✔✔✔.
Attachments:
Answers
Answered by
1
Given :-
- 10 cylindrical pillars of a building have to be painted. If the diameter of each pillar is 50 cm and the height is 4 m
To find :-
- What will be the cost of painting @ 14 per m²
Solution :-
- Diameter of cylindrical pillars = 50cm
- Radius of cylindrical pillars = 50/2 = 25cm = 25/100 = 0.25m
- Height of cylindrical pillars = 4 m
- Now, curved surface area of cylindrical pillars
→ 2πrh
Where " r " is radius and " h " is height.
- → 2 × 22/7 × 0.25 × 4
- → 44/7 × 1
- → 44/7 m²
Area of 10 cylindrical pillars
- 10 × 44/7 = 440/7 m²
The cost of painting @ 14 per m²
→ Total cost
→ 440/7 × 14
→ 440 × 2
→ Rs.880
Hence,
Total cost for painting 10 cylindrical pillars is Rs.880
Similar questions