Q : 5    A cylindrical pillar is  \small 50\hspace{1mm}cm in diameter and 3.5\ m in height. Find the cost of painting the curved surface of the pillar at the rate of \small Rs \hspace{1mm} 12.50  per \small m^2

Answers (1)

Given,

Radius of the cylindrical pillar, r = \frac{50}{2}\ cm= 25\ cm= 0.25\ m

Height of the cylinder, h  = 3.5\hspace{1mm}m

We know,

Curved surface area of a cylinder = 2\pi r h

\therefore Curved surface area of the pillar = 2\times\frac{22}{7}\times 0.25 \times3.5

= 1\times22\times 0.25\ m^2

= 5.5\ m^2

Now,

Cost of painting \small 1\ m^2 of the pillar =\small Rs \hspace{1mm} 12.50

\therefore Cost of painting the curved surface area of the pillar = \small Rs.\ (12.50\times5.5)

\small = Rs.\ 68.75

Therefore, the cost of painting curved surface area of the pillar is \small Rs.\ 68.75

Most Viewed Questions

Related Chapters

Preparation Products

Knockout NEET 2024

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 40000/-
Buy Now
Knockout NEET 2025

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 45000/-
Buy Now
NEET Foundation + Knockout NEET 2024

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 54999/- ₹ 42499/-
Buy Now
NEET Foundation + Knockout NEET 2024 (Easy Installment)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 3999/-
Buy Now
NEET Foundation + Knockout NEET 2025 (Easy Installment)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 3999/-
Buy Now
Boost your Preparation for JEE Main with our Foundation Course
 
Exams
Articles
Questions